View source for Cincinnati Open

{{Short description|American tennis tournament}}
{{for|the LPGA golf tournament|Cincinnati Open (LPGA Tour)}}
{{redirect-distinguish|Western & Southern Open|Western Open|Southern Open}}
{{Use mdy dates|date=July 2023}}
{{Use American English|date=July 2023}}
{{Infobox tennis tournament
| name            = Cincinnati Open
| type            = joint
| current         = 
| logo            = Cincinnati_Open_logo.svg
| logo size       = 150px
| event name      = 
| city            = [[Cincinnati]]
| country         = United States
| founded         = {{start date and age|df=yes|1899}}
| abolished       =
| location        =
| venue           = [[Lindner Family Tennis Center]] (1979–current)
| surface         = Hard / outdoor
| website         = [http://www.cincinnatiopen.com/ CincinnatiOpen.com]
| completed event = [[2024 Cincinnati Open|2024]]
| men's singles   = {{flagicon|ITA}} [[Jannik Sinner]]
| women's singles = {{flagicon|}} [[Aryna Sabalenka]]
| men's doubles   = {{flagicon|ESA}} [[Marcelo Arévalo]]<br /> {{flagicon|CRO}} [[Mate Pavić]]
| women's doubles = {{flagicon|USA}} [[Asia Muhammad]]<br /> {{flagicon|NZL}} [[Erin Routliffe]]
| notes           =
| ATP category    = [[ATP Tour Masters 1000|Masters 1000]]
| ATP draw        = 56S / 24Q / 24D
| ATP prize money = US$6,795,555 (2024)
| WTA tier        = [[WTA 1000 tournaments|WTA 1000]]
| WTA draw        = 56S / 32Q / 28D
| WTA prize money = US$3,211,715 (2024)
}}

The '''Cincinnati Open''' (formerly known as the '''Cincinnati Masters''') is an annual professional [[tennis]] event held in [[Cincinnati]], United States. Due to previous sponsorship, it has also been known as: the Thriftway ATP Championships, the Great American Insurance ATP Championships, the Western & Southern Financial Group Masters and Women's Open and, most recently, the Western & Southern Open. It is played on outdoor [[hard court]]s at the [[Lindner Family Tennis Center]] in [[Mason, Ohio]], and is held in August. The event started on September 18, 1899, and is the oldest tennis tournament in the United States still played in its original city.<ref>''From Club Court to Center Court'' by Phillip S. Smith, page 3 (2008 Edition; {{ISBN|978-0-9712445-7-3}}).</ref><ref name=":0">{{Cite web |title=From Cincinnati to Charlotte? Future of Western & Southern Open may involve moving cities |url=https://www.tennis.com/news/articles/from-cincinnati-to-charlotte-western-southern-open-future-may-involve-relocation |access-date=2023-08-01 |website=Tennis.com |language=en}}</ref> It also is the third largest tennis event in the United States, after the [[US Open (tennis)|US Open]] and the [[Indian Wells Masters]]. It is one of the [[ATP Tour Masters 1000|ATP Masters 1000]] tournaments on the [[ATP Tour]], and one of the [[WTA 1000 tournaments|WTA 1000]] tournaments on the [[WTA Tour]].<ref name="cincytennis">{{cite web|title=Western & Southern Open|url=http://www.cincytennis.com/|website=cincytennis.com|publisher=USTA}}</ref>

==History==
The tournament was started in 1899 as the Cincinnati Open and was renamed in 1901 to Tri-State Tennis Tournament, a name it would keep until 1969 (it would later be known by several other names, including ATP Championships),<ref name="Cincy changes name">{{cite web|title=Cincinnati tournament changes name|url=http://www.atpworldtour.com/News/Tennis/2010/12/Other/Cincinnati-Western-Southern-Open.aspx|publisher=atpworldtour.com|access-date=7 December 2010}}</ref> and would eventually grow into the tournament now held in [[Mason, Ohio|Mason]].<ref>[http://citybeat.com/2001-08-02/events.shtml Follow the Bouncing Ball], citybeat.com, August 2, 2001. {{webarchive |url=https://web.archive.org/web/20070804222300/http://citybeat.com/2001-08-02/events.shtml |date=August 4, 2007 }}</ref> The original tournament was held at the Avondale Athletic Club, which sat on property that is now [[Xavier University]], and would later be moved to several various locations due to changes in tournament management and surfaces. The first tournament in 1899 was played on [[clay court]]s (described in a newspaper article of the time as "crushed brick dust"), and the event was mostly played on clay until 1979 when it switched to hardcourts.

In 1903, the tournament was moved to the [[Cincinnati Tennis Club]], where it was primarily held until 1972. In 1974, the tournament was nearly dropped from the tennis calendar but moved at the last moment to the Cincinnati Convention Center, where it was played indoors and, for the first time since 1919, without a women's draw. In 1975, the tournament moved to the [[Coney Island, Cincinnati, Ohio|Coney Island]] amusement park on the [[Ohio River]], and the tournament began to gain momentum again.

Between 1981 and 1989 it was a major tournament on the men's [[Grand Prix tennis circuit|Grand Prix Tennis Tour]] and part of the [[Grand Prix Super Series]].

In 1979 the tournament moved to Mason where a permanent stadium was built and the surface was changed from Har-Tru clay to hardcourt (DecoTurf II.). Later, two other permanent stadia were constructed, making Cincinnati the only tennis tournament outside the four [[Grand Slam (tennis)|Grand Slam]] events with three stadium courts – Center Court, Grandstand Court and Court 3. A new Court 3 was built in 2010, increasing the number of stadium courts to four, with the existing Court 3 renamed Court 9. The women's competition was reinstated in 1988 for one year, and then again in 2004 when the organizers, with the help of the [[Octagon (sports agency)|Octagon]] sports agency, bought the [[Croatian Bol Ladies Open]] and moved it to Cincinnati.

In August 2008, the men's tournament was sold to the [[United States Tennis Association]], the owners of the [[US Open (tennis)|US Open]].<ref>{{Cite web |url=http://m.sportsbusinessdaily.com/Journal/Issues/2008/08/20080804/This-Weeks-News/USTA-Buying-Cincinnati-Mens-Stop.aspx |title=USTA buying Cincinnati men's stop |access-date=2013-06-02 |archive-date=2015-06-11 |archive-url=https://web.archive.org/web/20150611004414/http://m.sportsbusinessdaily.com/Journal/Issues/2008/08/20080804/This-Weeks-News/USTA-Buying-Cincinnati-Mens-Stop.aspx |url-status=dead }}</ref>

In 2002, the tournament was sponsored for the first time by [[Western & Southern Financial Group]], with the company continuing its sponsorship until at least 2016.<ref>{{cite web|url=http://www.atpworldtour.com/News/Tennis/2012/04/Features/Cincinnati-Renews-Title-Sponsor.aspx|publisher=ATP|title=Cincinnati renews title sponsor through 2014|date=April 23, 2012|website=atpworldtour.com}}</ref> In 2011 the men's and women's tournaments were played in the same week, and the name changed from the "Western & Southern Financial Group Masters and Women's Open" to the "Western & Southern Open".<ref name="Cincy changes name"/>

In 2022, the tournament was sold by the USTA to [[Ben Navarro]]'s Beemok Capital;<ref>{{Cite web |last=Dixon |first=Ed |date=2022-08-15 |title=Western and Southern Open sold by USTA to Beemok Capital |url=https://www.sportspromedia.com/news/cincinnati-western-and-southern-open-usta-tennis-beemok-capital-benjamin-navarro/ |access-date=2023-08-01 |website=SportsPro |language=en-GB}}</ref> in 2023, the tournament proposed an additional $22.5 million in state funding to help cover a proposed $150 million expansion to the Lindner Family Tennis Center, which included plans for the Cincinnati Open to expand to a 12-day format with a 96-player draw (joining the [[Indian Wells Open]], [[Madrid Open (tennis)|Madrid Open]], and [[Miami Open (tennis)|Miami Open]]) and add additional programming.<ref>{{Cite web |last1=Marshall |first1=Payton |last2=Planalp |first2=Brian |date=2023-04-28 |title=Western and Southern Open primed for $150M expansion to stay in Cincinnati |url=https://www.fox19.com/2023/04/28/western-southern-open-primed-150m-expansion-warren-county/ |access-date=2023-08-01 |publisher=[[WXIX-TV]] |language=en}}</ref> In May 2023, rumors emerged that Beemok was considering relocating the tournament to a proposed $400 million tennis complex in [[Charlotte, North Carolina]]. Beemok denied that relocation was being considered, stating, "We've had productive conversations with state and local representatives in Mason and the surrounding area and have made considerable efforts to develop a potential master plan to expand the event in its current location."<ref name=":0" /> In June 2023, the city proposed a $15 million commitment and other economic incentives to keep the tournament in Mason, while State Senator [[Steve Wilson (Ohio politician)|Steve Wilson]] proposed a $25 million contribution and a $1 billion "super-capital improvement fund" for a state budget proposal.<ref>{{Cite web |title=Mason, state propose millions of dollars to keep professional tennis tournament |url=https://www.daytondailynews.com/community/mason-state-propose-millions-of-dollars-to-keep-professional-tennis-tournament/YB6E36QCKNF43OA57DYHWYOSAE/ |access-date=2023-08-01 |website=Dayton Daily News |language=English}}</ref>

In October 2023, Beemok announced that the tournament will remain in Mason and that it be expanding the event to a 12-day format for both men and women, with the draws expanding from 56 to 96 players beginning in 2025.<ref>{{Cite web |last=Ramsey |first=Mary |date=2023-10-10 |title=Western and Southern Open tennis tournament spurns Charlotte, will stay in Cincinnati area|url=https://www.charlotteobserver.com/news/local/article280347519.html |access-date=2023-10-10 |publisher=[[The Charlotte Observer]] |language=en}}</ref><ref>{{Cite web |last=Zagoria |first=Adam |date=2023-10-10 |title=Western & Southern Open Remaining In Ohio, Won't Shift To North Carolina|url=https://www.forbes.com/sites/adamzagoria/2023/10/10/western--southern-open-remaining-in-ohio-wont-shift-to-north-carolina/?sh=274800c435d4 |access-date=2023-10-10 |work=[[Forbes]] |language=en}}</ref> As part of the agreement, Western & Southern agreed to end its title sponsorship.<ref name=":1">{{Cite web |date=2024-01-08 |title=Western & Southern Open will return to original name of 'Cincinnati Open' |url=https://www.wcpo.com/news/local-news/western-southern-open-will-return-to-original-name-of-cincinnati-open |access-date=2024-08-13 |website=WCPO 9 Cincinnati |language=en}}</ref> Due to this, and in honour of the tournament's 125th anniversary, the "Western & Southern Open" branding was dropped in 2024 in favor of returning to the Cincinnati Open name.<ref name=":1" />

===Paul M. Flory===
In 1975, the tournament reins were taken by Paul M. Flory, then an executive with [[Procter & Gamble]]. During his tenure, the tournament enriched its considerable heritage while donating millions of dollars to charity: to [[Cincinnati Children's Hospital Medical Center]], Tennis for City Youth (a program to teach tennis to inner-city children), and to The Charles M. Barrett Cancer Center at University Hospital.  Flory was honored with the ATP's [[Arthur Ashe]] Humanitarian Award, enshrinement in the USTA/Midwest Hall of Fame and the Cincinnati Tennis Hall of Fame, and was named one of the Great Living Cincinnatians by the Cincinnati Chamber of Commerce. Flory began his involvement as a volunteer with the tournament in the late 1960s and remained a volunteer until the end, never accepting a salary. Flory, who was born on May 31, 1922, died on January 31, 2013, remaining tournament chairman until his final day.

==Venue==
The tournament is played at the [[Lindner Family Tennis Center]], located in the [[Cincinnati]] suburb of [[Mason, Ohio]]. It features a total of 17 courts, including four tennis stadiums—Center Court, Grandstand Court, Court 3, and Court 9 (formerly known as Court 3)—and among the few venues (e.g. the Madrid Open) other than Grand Slams with more than two permanent stadiums.
{|class=wikitable
!Court!!Constructed!!Capacity
|-
|Center Court||1981||11,400
|-
|Grandstand Court||1995||5,000
|-
|Court 3||2010||4,000
|-
|Court 9||1997||2,000
|}

In 2009, the tennis tournament announced a $10 million upgrade to the facility, including the construction of a {{convert|52000|sqft|m2|adj=on}} West Building to add space for players, media and fans. The new building, which opened in mid-2010 and is named the Paul M. Flory Player Center, is approximately twice as high as the previous West Building, rising {{convert|85|ft|m}} above ground level and {{convert|97|ft|m}} above the court level.

In 2010, the tournament announced plans to expand the grounds by more than 40% and add six new courts. One of those courts is Court 3, which serves as the third television court, while another court has seating for 2,500. A new ticket office, entry plaza, food court and exhibit areas also were added.<ref>{{cite news|title = Cincinnati expansion plans|date = 2010-08-21|publisher = ATP|url = http://www.atpworldtour.com/News/Tennis/2010/08/33/Cincinnati-Expansion-Plans.aspx|work = Press release|access-date = 2010-08-22}}</ref>

In June 2020, due to the [[COVID-19 pandemic]], the tournament temporarily relocated to the [[USTA Billie Jean King National Tennis Center|Billie Jean King National Tennis Center]] in New York City to reduce unnecessary player travel by centralizing the tournament and the U.S. Open at one venue.<ref>{{Cite web|last=Baum|first=Dave Clark and Adam|title=The 2020 Western & Southern Open will be played in New York this summer|url=https://www.cincinnati.com/story/sports/tennis/2020/06/16/cuomo-allows-nyc-tennis-w-s-open-may-replace-u-s-open-qualifying/3198764001/|access-date=2020-07-26|website=The Enquirer}}</ref>

The venue hosts additional events including the [[Atlantic 10 Conference]] Tennis Championships, the [[Ohio Athletic Conference]] Tennis Championships, and both the boys' and girls' [[Ohio High School Athletic Association|OHSAA]] state tennis championships, and has hosted an [[Association of Volleyball Professionals]] event, concerts, charitable events, and numerous regional and national junior tennis events.

Because of intentional design choices for the Lindner Family Tennis Center, the Cincinnati Open is known as one of the more intimate environments for player-fan interaction. The layout of the facility promotes fan interaction as players walk from court to court among the fans, and the tournament publicizes player practice times on the numerous courts.

==Past finals==
===Men's singles===
{| class="wikitable sortable" style="font-size:1.00em; line-height:1.5em;"
!Year<ref name="Winners">{{cite book |last1 = Smith |first1 = Philip |title = From Club Court to Center Court |editor= Eric Duncan |year = 2010 |pages = 53–64 |url = http://assets.usta.com/assets/663/15/Compendium%2010_reduced.pdf |access-date = 2011-05-14 |isbn = 978-0-9712445-8-0}}</ref>!!Champions!!Runners-up!!Score
|-
|1899|| {{flagicon|USA|1896}} [[Nat Emerson]] <small>(1/1)</small> || {{flagicon|USA|1896}} [[Dudley Sutphin]] ||8–6, 6–1, 10–8
|-
|1900|| {{flagicon|USA|1896}} [[Raymond D. Little]] <small>(1/3)</small> || {{flagicon|USA|1896}} [[Nat Emerson]] ||6–2 6–4 6–2
|-
|1901|| {{flagicon|USA|1896}} [[Raymond D. Little]] <small>(2/3)</small> || {{flagicon|USA|1896}} [[Kreigh Collins (tennis)|Kreigh Collins]] ||2–6, 8–6, 6–4, 7–5
|-
|1902|| {{flagicon|USA|1896}} [[Raymond D. Little]] <small>(3/3)</small> || {{flagicon|USA|1896}} [[Kreigh Collins (tennis)|Kreigh Collins]] ||3–6, 6–8, 6–4, 6–1, 6–2
|-
|1903|| {{flagicon|USA|1896}} [[Kreigh Collins (tennis)|Kreigh Collins]] <small>(1/1)</small> || {{flagicon|USA|1896}} [[Raymond D. Little]] ||11–9, 4–6, 6–1, 3–6, 6–4
|-
|1904|| {{flagicon|USA|1896}} [[Beals Wright]] <small>(1/3)</small> || {{flagicon|USA|1896}} [[L. Harry Waidner]] ||7–5, 6–0, 6–3
|-
|1905|| {{flagicon|USA|1896}} [[Beals Wright]] <small>(2/3)</small> || {{flagicon|USA|1896}} [[Kreigh Collins (tennis)|Kreigh Collins]] ||6–3, 7–5, 4–6, 7–9, 6–3
|-
|1906|| {{flagicon|USA|1896}} [[Beals Wright]] <small>(3/3)</small> || {{flagicon|USA|1896}} [[Robert LeRoy]] ||6–4, 6–4, 4–6, 4–6, 6–2
|-
|1907|| {{flagicon|USA|1896}} [[Robert LeRoy]] <small>(1/3)</small> || {{flagicon|USA|1896}} [[Robert Chauncey Seaver]] ||8–6, 6–8, 6–2, 6–0
|-
|1908|| {{flagicon|USA|1908}} [[Robert LeRoy]] <small>(2/3)</small> || {{flagicon|USA|1908}} [[Nat Emerson]] ||6–0, 7–5, 6–4
|-
|1909|| {{flagicon|USA|1908}} [[Robert LeRoy]] <small>(3/3)</small> || {{flagicon|USA|1908}} [[Nat Emerson]] ||6–3, 3–6, 6–0, 1–6, 6–3
|-
|1910|| {{flagicon|USA|1908}} [[Richard H. Palmer]] <small>(1/2)</small> || {{flagicon|USA|1908}} [[Wallace F. Johnson]] ||11–9, 6–3, 6–4
|-
|1911|| {{flagicon|USA|1908}} [[Richard H. Palmer]] <small>(2/2)</small> || {{flagicon|USA|1908}} [[Richard Bishop (tennis)|Richard Bishop]] ||14–12, 6–4, 8–6
|-
|1912|| {{flagicon|USA|1912}} [[Gus Touchard]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Richard H. Palmer]] ||6–1, 6–2, 7–5
|-
|1913|| {{flagicon|USA|1912}} [[William S. McEllroy]] <small>(1/2)</small> || {{flagicon|USA|1912}} [[Gus Touchard]] || [[default (tennis)|default]]
|-
|1914|| {{flagicon|USA|1912}} [[William S. McEllroy]] <small>(2/2)</small> || {{flagicon|USA|1912}} [[William Hoag]] ||6–4, 1–6, 6–4, 6–2
|-
|1915|| {{flagicon|USA|1912}} [[Clarence Griffin]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[William S. McEllroy]] ||6–4, 6–3, 6–3
|-
|1916|| {{flagicon|USA|1912}} [[Bill Johnston (tennis)|Bill Johnston]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Clarence Griffin]] || default
|-
|1917|| {{flagicon|USA|1912}} [[Fritz Bastian]] <small>(1/2)</small> || {{flagicon|USA|1912}} [[John G. MacKay]] ||4–6, 6–4, 6–1, 6–2
|-
|1918||colspan="3"  style="text-align:center" bgcolor="#f5f5f5"|''Tournament suspended due to World War I''
|-
|1919|| {{flagicon|USA|1912}} [[Fritz Bastian]] <small>(2/2)</small> || {{flagicon|USA|1912}} [[John F. Hennessey|John Hennessey]] ||2–6, 6–4, 6–1, 6–4
|-
|1920|| {{flagicon|USA|1912}} [[John F. Hennessey|John Hennessey]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Walter Wesbrook]] ||8–10, 6–3, 6–3, 6–4
|-
|1921||colspan="3"  style="text-align:center" bgcolor="#f5f5f5"|''Tournament suspended''
|-
|1922|| {{flagicon|USA|1912}} [[Louis Kuhler]] <small>(1/2)</small> || {{flagicon|USA|1912}} [[Edwin Haupt]] ||6–3, 6–1, 6–1
|-
|1923|| {{flagicon|USA|1912}} [[Louis Kuhler]] <small>(2/2)</small> || {{flagicon|USA|1912}} [[Paul Kunkel]] ||6–3, 6–3, 6–2
|-
|1924|| {{flagicon|USA|1912}} [[George Lott]] <small>(1/4)</small> || {{flagicon|USA|1912}} [[Paul Kunkel]] ||2–6, 13–11, 6–4, 6–3
|-
|1925|| {{flagicon|USA|1912}} [[George Lott]] <small>(2/4)</small> || {{flagicon|USA|1912}} [[Julius Sagalowsky]] ||6–3, 7–5, 6–1
|-
|1926|| {{flagicon|USA|1912}} [[Bill Tilden]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[George Lott]] ||4–6, 6–3, 7–9, 6–4, 6–3
|-
|1927|| {{flagicon|USA|1912}} [[George Lott]] <small>(3/4)</small> || {{flagicon|USA|1912}} [[Emmett Paré]] ||6–4, 6–4, 6–2
|-
|1928|| {{flagicon|USA|1912}} [[Emmett Paré]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Harris Coggeshall]] ||2–6, 6–1, 6–4, 6–4
|-
|1929|| {{flagicon|USA|1912}} [[Herbert Bowman]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Julius Seligson]] ||2–6, 6–4, 6–4, 6–1
|-
|1930|| {{flagicon|USA|1912}} [[Frank Shields]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Emmett Paré]] ||6–2, 6–4, 3–6, 2–6, 6–1
|-
|1931|| {{flagicon|USA|1912}} [[Cliff Sutter]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Bruce Barnes (tennis)|Bruce Barnes]] ||6–3, 6–2, 3–6, 6–3
|-
|1932|| {{flagicon|USA|1912}} [[George Lott]] <small>(4/4)</small> || {{flagicon|USA|1912}} [[Frank Parker (tennis)|Frank Parker]] ||5–7, 6–2, 4–6, 6–0, 6–3
|-
|1933|| {{flagicon|USA|1912}} [[Bryan Grant]] <small>(1/2)</small> || {{flagicon|USA|1912}} [[Frank Parker (tennis)|Frank Parker]] ||11–9, 6–2, 1–6, 7–5
|-
|1934|| {{flagicon|USA|1912}} [[Henry Prusoff]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Arthur Hendrix]] ||6–3, 6–2, 4–6, 6–4
|-
|1935||colspan="3"  bgcolor="#f5f5f5" align=center|''Tournament suspended due to the [[Great Depression]]''
|-
|1936|| {{flagicon|USA|1912}} [[Bobby Riggs]] <small>(1/4)</small> || {{flagicon|USA|1912}} [[Charles Harris (tennis)|Charles Harris]] ||6–1, 6–3, 6–1
|-
|1937|| {{flagicon|USA|1912}} [[Bobby Riggs]] <small>(2/4)</small> || {{flagicon|USA|1912}} [[John McDiarmid (tennis)|John McDiarmid]] ||6–3, 6–3, 4–6, 6–3
|-
|1938|| {{flagicon|USA|1912}} [[Bobby Riggs]] <small>(3/4)</small> || {{flagicon|USA|1912}} [[Frank Parker (tennis)|Frank Parker]] ||6–1, 7–5, 6–3
|-
|1939|| {{flagicon|USA|1912}} [[Bryan Grant]] <small>(2/2)</small> || {{flagicon|USA|1912}} [[Frank Parker (tennis)|Frank Parker]] ||4–6, 6–3, 6–1, 2–6, 6–4
|-
|1940|| {{flagicon|USA|1912}} [[Bobby Riggs]] <small>(4/4)</small> || {{flagicon|USA|1912}} [[Arthur Marx]] ||11–9, 6–2, 4–6, 6–8, 6–1
|-
|1941|| {{flagicon|USA|1912}} [[Frank Parker (tennis)|Frank Parker]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Bill Talbert]] ||6–2, 6–2, 6–4
|-
|1942|| {{flagicon|ECU}} [[Pancho Segura]] <small>(1/2)</small> || {{flagicon|USA|1912}} [[Bill Talbert]] ||1–6, 6–2, 6–4, 12–10
|-
|1943|| {{flagicon|USA|1912}} [[Bill Talbert]] <small>(1/3)</small> || {{flagicon|USA|1912}} [[Seymour Greenberg]] ||6–1, 6–2, 6–3
|-
|1944|| {{flagicon|ECU}} [[Pancho Segura]] <small>(2/2)</small> || {{flagicon|USA|1912}} [[William Talbert]] ||9–11, 6–2, 7–5, 2–6, 7–5
|-
|1945|| {{flagicon|USA|1912}} [[Bill Talbert]] <small>(2/3)</small> || {{flagicon|USA|1912}} [[Elwood Cooke]] ||6–2, 7–9, 6–2
|-
|1946|| {{flagicon|USA|1912}} [[Nick Carter (tennis)|Nick Carter]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[George E. Richards (tennis)|George Richards]] ||6–1, 6–1
|-
|1947|| {{flagicon|USA|1912}} [[Bill Talbert]] <small>(3/3)</small> || {{flagicon|USA|1912}} [[George Pero]] ||6–1, 6–0, 6–0
|-
|1948|| {{flagicon|USA|1912}} [[Herbert Behrens (tennis)|Herbert Behrens]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Irvin Dorfman]] ||7–5, 11–9, 2–6, 6–8, 6–4
|-
|1949|| {{flagicon|USA|1912}} [[James Brink]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Arnold Saul]] ||6–4, 6–8, 6–4, 6–0
|-
|1950|| {{flagicon|USA|1912}} [[Glenn Bassett]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Ham Richardson|Hamilton Richardson]] ||6–2, 4–6, 6–1, 6–1
|-
|1951|| {{flagicon|USA|1912}} [[Tony Trabert]] <small>(1/2)</small> || {{flagicon|USA|1912}} [[William Talbert]] ||5–7, 4–6, 6–4, 6–3, 6–4
|-
|1952|| {{flagicon|USA|1912}} [[Noel Brown]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Fred Hagist]] ||6–4, 0–6, 2–0 [[Retirement (tennis)|ret.]]
|-
|1953|| {{flagicon|USA|1912}} [[Tony Trabert]] <small>(2/2)</small> || {{flagicon|USA|1912}} [[Ham Richardson|Hamilton Richardson]] ||10–8, 6–3, 6–4
|-
|1954|| {{flagicon|USA|1912}} [[Straight Clark]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Sam Giammalva]] ||8–6, 6–1, 6–1
|-
|1955|| {{flagicon|USA|1912}} [[Bernard Bartzen]] <small>(1/3)</small> || {{flagicon|USA|1912}} [[Tony Trabert]] ||7–9, 11–9, 6–4
|-
|1956|| {{flagicon|USA|1912}} [[Edward Moylan]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Bernard Bartzen]] ||6–0, 6–3, 6–3
|-
|1957|| {{flagicon|USA|1912}} [[Bernard Bartzen]] <small>(2/3)</small> || {{flagicon|USA|1912}} [[Grant Golden (tennis)|Grant Golden]] ||6–4, 7–5, 6–4
|-
|1958|| {{flagicon|USA|1912}} [[Bernard Bartzen]] <small>(3/3)</small> || {{flagicon|USA|1912}} [[Sam Giammalva]] ||7–5, 6–3, 6–2
|-
|1959|| {{flagicon|USA|1959}} [[Whitney Reed]] <small>(1/1)</small> || {{flagicon|USA|1959}} [[Donald Dell]] ||1–6, 7–5, 6–3, 6–3
|-
|1960|| {{flagicon|ECU}} [[Miguel Olvera]] <small>(1/1)</small> || {{flagicon|USA}} [[Crawford Henry]] ||4–6, 9–7, 6–4
|-
|1961|| {{flagicon|USA}} [[Allen Fox]] <small>(1/1)</small> || {{flagicon|USA}} [[William "Billy" Lenoir|Billy Lenoir]] ||3–6, 8–6, 6–2, 6–1
|-
|1962|| {{flagicon|USA}} [[Marty Riessen]] <small>(1/3)</small> || {{flagicon|USA}} [[Allen Fox]] ||1–6, 6–2, 6–2, 6–3
|-
|1963|| {{flagicon|USA}} [[Marty Riessen]] <small>(2/3)</small> || {{flagicon|USA}} [[Herbert Fitzgibbon]] ||6–1, 6–3, 7–5
|-
|1964|| {{flagicon|USA}} [[Herb Fitzgibbon]] <small>(1/1)</small> || {{flagicon|Australia}} [[Robert Brien]] ||6–1, 6–3, 6–1
|-
|1965|| {{flagicon|USA}} [[Billy Lenoir]] <small>(1/1)</small> || {{flagicon|USA}} [[Herbert Fitzgibbon]] ||1–6, 6–3, 6–3, 9–7
|-
|1966|| {{flagicon|USA}} [[David Power (tennis)|David Power]] <small>(1/1)</small> || {{flagicon|USA}} [[William Harris (tennis)|William Harris]] ||7–5, 3–6, 0–6, 6–1, 6–2
|-
|1967|| {{flagicon|MEX|1934}} [[Joaquín Loyo-Mayo]] <small>(1/1)</small> || {{flagicon|CHI}} [[Jaime Fillol]] ||8–6, 6–1
|-
|1968|| {{flagicon|USA}} [[William Harris (tennis)|William Harris]] <small>(1/1)</small> || {{flagicon|USA}} [[Tom Gorman (tennis)|Tom Gorman]] ||3–6, 6–2, 6–2
|-
!colspan=5 align=center |↓  [[Open Era (tennis)|Open era]]  ↓
|-
|[[1969 Cincinnati Open|1969]]|| {{flagicon|USA}} [[Cliff Richey]] <small>(1/1)</small> || {{flagicon|AUS}} [[Allan Stone]] ||6–1, 6–2
|-
|colspan=5 align=center |↓  [[Grand Prix tennis circuit|Grand Prix circuit]]  ↓
|-
|[[1970 Cincinnati Open|1970]] || {{flagicon|AUS}} [[Ken Rosewall]] <small>(1/1)</small> || {{flagicon|USA}} [[Cliff Richey]] ||7–9, 9–7, 8–6
|-
|[[1971 Cincinnati Open|1971]] || {{flagicon|USA}} [[Stan Smith]] <small>(1/1)</small> || {{flagicon|ESP|1945}} [[Juan Gisbert Sr.]] ||7–6, 6–3
|-
|[[1972 Cincinnati Open|1972]] || {{flagicon|USA}} [[Jimmy Connors]] <small>(1/1)</small> || {{flagicon|ARG}} [[Guillermo Vilas]] ||6–3, 6–3
|-
|[[1973 Cincinnati Open|1973]] || {{flagicon|ROU|1965}} [[Ilie Năstase]] <small>(1/1)</small> || {{flagicon|ESP|1945}} [[Manuel Orantes]] ||5–7, 6–3, 6–4
|-
|[[1974 Cincinnati Open|1974]] || {{flagicon|USA}} [[Marty Riessen]] <small>(3/3)</small> || {{flagicon|USA}} [[Robert Lutz (tennis)|Robert Lutz]] ||7–6<sup>(8–6)</sup>, 7–6<sup>(7–5)</sup>
|-
|[[1975 Cincinnati Open|1975]] || {{flagicon|USA}} [[Tom Gorman (tennis)|Tom Gorman]] <small>(1/1)</small> || {{flagicon|USA}} [[Sherwood Stewart]] ||7–5, 2–6, 6–4
|-
|[[1976 Cincinnati Open|1976]] || {{flagicon|USA}} [[Roscoe Tanner]] <small>(1/1)</small> || {{flagicon|USA}} [[Eddie Dibbs]] ||7–6, 6–3
|-
|[[1977 Cincinnati Open|1977]] || {{flagicon|USA}} [[Harold Solomon]] <small>(1/2)</small> || {{flagicon|GBR}} [[Mark Cox (tennis)|Mark Cox]] ||6–2, 6–3
|-
|[[1978 Cincinnati Open|1978]] || {{flagicon|USA}} [[Eddie Dibbs]] <small>(1/1)</small> || {{flagicon|MEX}} [[Raúl Ramírez]] ||5–7, 6–3, 6–2
|-
|[[1979 Cincinnati Open|1979]]{{efn|name=#1979|The 1979 men's competition, despite being named the '''1979 ATP Championships''' was a non-Grand Prix event not bringing any ATP ranking points and was run as a rival event to the [[1979 U.S. Pro Tennis Championships]] in Boston.}}
|| {{flagicon|USA}} [[Peter Fleming (tennis)|Peter Fleming]] <small>(1/1)</small> || {{flagicon|USA}} [[Roscoe Tanner]] ||6–4, 6–2
|-
|[[1980 Cincinnati Open|1980]] || {{flagicon|USA}} [[Harold Solomon]] <small>(2/2)</small> || {{flagicon|PAR|1954}} [[Francisco González (tennis)|Francisco González]] ||7–6, 6–3
|-
|colspan=5 align=center |↓  [[Grand Prix Super Series]]  ↓
|-
|[[1981 Cincinnati Open|1981]] || {{flagicon|USA}} [[John McEnroe]] <small>(1/1)</small> || {{flagicon|NZL}} [[Chris Lewis (tennis)|Chris Lewis]] ||6–3, 6–4
|-
|[[1982 Cincinnati Open|1982]] || {{flagicon|TCH}} [[Ivan Lendl]] <small>(1/1)</small> || {{flagicon|USA}} [[Steve Denton]] ||6–2, 7–6<sup>(9–7)</sup>
|-
|[[1983 Cincinnati Open|1983]] || {{flagicon|SWE}} [[Mats Wilander]] <small>(1/4)</small> || {{flagicon|USA}} [[John McEnroe]] ||6–4, 6–4
|-
|[[1984 Cincinnati Open|1984]] || {{flagicon|SWE}} [[Mats Wilander]] <small>(2/4)</small> || {{flagicon|SWE}} [[Anders Järryd]] ||7–6<sup>(7–4)</sup>, 6–3
|-
|[[1985 Cincinnati Open|1985]] || {{flagicon|FRG}} [[Boris Becker]] <small>(1/1)</small> || {{flagicon|SWE}} [[Mats Wilander]] ||6–4, 6–2
|-
|[[1986 Cincinnati Open|1986]] || {{flagicon|SWE}} [[Mats Wilander]] <small>(3/4)</small> || {{flagicon|USA}} [[Jimmy Connors]] ||6–4, 6–1
|-
|[[1987 Cincinnati Open|1987]] || {{flagicon|SWE}} [[Stefan Edberg]] <small>(1/2)</small> || {{flagicon|FRG}} [[Boris Becker]] ||6–4, 6–1
|-
|[[1988 Cincinnati Open – Men's singles|1988]] || {{flagicon|SWE}} [[Mats Wilander]] <small>(4/4)</small> || {{flagicon|SWE}} [[Stefan Edberg]] ||3–6, 7–6<sup>(7–5)</sup>, 7–6<sup>(7–5)</sup>
|-
|[[1989 Cincinnati Open – Singles|1989]] || {{flagicon|USA}} [[Brad Gilbert]] <small>(1/1)</small> || {{flagicon|SWE}} [[Stefan Edberg]] ||6–4, 2–6, 7–6<sup>(7–5)</sup>
|-
|colspan=5 align=center |↓  [[ATP Tour Masters 1000]]{{efn|name=ATP 1000|Known as Championship Series, Single Week from 1990 till 1995, Super 9 from 1996 till 1999 and Masters Series from 2000 till 2008.}}  ↓
|-
|[[1990 Thriftway ATP Championships – Singles|1990]] || {{flagicon|SWE}} [[Stefan Edberg]] <small>(2/2)</small> || {{flagicon|USA}} [[Brad Gilbert]] ||6–1, 6–1
|-
|[[1991 Thriftway ATP Championships – Singles|1991]] || {{flagicon|FRA}} [[Guy Forget]] <small>(1/1)</small> || {{flagicon|USA}} [[Pete Sampras]] ||2–6, 7–6<sup>(7–4)</sup>, 6–4
|-
|[[1992 Thriftway ATP Championships – Singles|1992]] || {{flagicon|USA}} [[Pete Sampras]] <small>(1/3)</small> || {{flagicon|USA}} [[Ivan Lendl]] ||6–3, 3–6, 6–3
|-
|[[1993 Thriftway ATP Championships – Singles|1993]] || {{flagicon|USA}} [[Michael Chang]] <small>(1/2)</small> || {{flagicon|SWE}} [[Stefan Edberg]] ||7–5, 0–6, 6–4
|-
|[[1994 Thriftway ATP Championships – Singles|1994]] || {{flagicon|USA}} [[Michael Chang]] <small>(2/2)</small> || {{flagicon|SWE}} [[Stefan Edberg]] ||6–2, 7–5
|-
|[[1995 Thriftway ATP Championships – Singles|1995]] || {{flagicon|USA}} [[Andre Agassi]] <small>(1/3)</small> || {{flagicon|USA}} [[Michael Chang]] ||7–5, 6–2
|-
|[[1996 Great American Insurance ATP Championships – Singles|1996]] || {{flagicon|USA}} [[Andre Agassi]] <small>(2/3)</small> || {{flagicon|USA}} [[Michael Chang]] ||7–6<sup>(7–4)</sup>, 6–4
|-
|[[1997 Great American Insurance ATP Championships – Singles|1997]] || {{flagicon|USA}} [[Pete Sampras]] <small>(2/3)</small> || {{flagicon|AUT}} [[Thomas Muster]] ||6–3, 6–4
|-
|[[1998 Great American Insurance ATP Championships|1998]] || {{flagicon|AUS}} [[Patrick Rafter]] <small>(1/1)</small> || {{flagicon|USA}} [[Pete Sampras]] ||1–6, 7–6<sup>(7–2)</sup>, 6–4
|-
|[[1999 Great American Insurance ATP Championships – Singles|1999]] || {{flagicon|USA}} [[Pete Sampras]] <small>(3/3)</small> || {{flagicon|AUS}} [[Patrick Rafter]] ||7–6<sup>(9–7)</sup>, 6–3
|-
|[[2000 Cincinnati Masters – Singles|2000]] || {{flagicon|SWE}} [[Thomas Enqvist]] <small>(1/1)</small> || {{flagicon|GBR}} [[Tim Henman]] ||7–6<sup>(7–5)</sup>, 6–4
|-
|[[2001 Cincinnati Masters – Singles|2001]] || {{flagicon|BRA}} [[Gustavo Kuerten]] <small>(1/1)</small> || {{flagicon|AUS}} [[Patrick Rafter]] ||6–1, 6–3
|-
|[[2002 Western & Southern Financial Group Masters – Singles|2002]] || {{flagicon|ESP}} [[Carlos Moyá]] <small>(1/1)</small> || {{flagicon|AUS}} [[Lleyton Hewitt]] ||7–5, 7–6<sup>(7–5)</sup>
|-
|[[2003 Western & Southern Financial Group Masters – Singles|2003]] || {{flagicon|USA}} [[Andy Roddick]] <small>(1/2)</small> || {{flagicon|USA}}  [[Mardy Fish]] ||4–6, 7–6<sup>(7–3)</sup>, 7–6<sup>(7–4)</sup>
|-
|[[2004 Western & Southern Financial Group Masters – Singles|2004]] || {{flagicon|USA}} [[Andre Agassi]] <small>(3/3)</small> || {{flagicon|AUS}} [[Lleyton Hewitt]] ||6–3, 3–6, 6–2
|-
|[[2005 Western & Southern Financial Group Masters – Singles|2005]] || {{flagicon|SUI}} [[Roger Federer]] <small>(1/7)</small> || {{flagicon|USA}} [[Andy Roddick]] ||6–3, 7–5
|-
|[[2006 Western & Southern Financial Group Masters – Singles|2006]] || {{flagicon|USA}} [[Andy Roddick]] <small>(2/2)</small> || {{flagicon|ESP}} [[Juan Carlos Ferrero]] ||6–3, 6–4
|-
|[[2007 Western & Southern Financial Group Masters – Singles|2007]] || {{flagicon|SUI}} [[Roger Federer]] <small>(2/7)</small> || {{flagicon|USA}} [[James Blake (tennis)|James Blake]] ||6–1, 6–4
|-
|[[2008 Western & Southern Financial Group Masters – Singles|2008]] || {{flagicon|GBR}} [[Andy Murray]] <small>(1/2)</small> || {{flagicon|SRB|2004}} [[Novak Djokovic]] ||7–6<sup>(7–4)</sup>, 7–6<sup>(7–5)</sup>
|-
|[[2009 Western & Southern Financial Group Masters – Singles|2009]] || {{flagicon|SUI}} [[Roger Federer]] <small>(3/7)</small> || {{flagicon|SRB|2004}} [[Novak Djokovic]] ||6–1, 7–5
|-
|[[2010 Western & Southern Financial Group Masters – Singles|2010]] || {{flagicon|SUI}} [[Roger Federer]] <small>(4/7)</small> || {{flagicon|USA}} [[Mardy Fish]] ||6–7<sup>(5–7)</sup>, 7–6<sup>(7–1)</sup>, 6–4
|-
|[[2011 Western & Southern Open – Men's singles|2011]] || {{flagicon|GBR}} [[Andy Murray]] <small>(2/2)</small> || {{flagicon|SRB}} [[Novak Djokovic]] ||6–4, 3–0 ret.
|-
|[[2012 Western & Southern Open – Men's singles|2012]] || {{flagicon|SUI}} [[Roger Federer]] <small>(5/7)</small> || {{flagicon|SRB}} [[Novak Djokovic]] ||6–0, 7–6<sup>(9–7)</sup>
|-
|[[2013 Western & Southern Open – Men's singles|2013]] || {{flagicon|ESP}} [[Rafael Nadal]] <small>(1/1)</small> || {{flagicon|USA}} [[John Isner]] ||7–6<sup>(10–8)</sup>, 7–6<sup>(7–3)</sup>
|-
|[[2014 Western & Southern Open – Men's singles|2014]] || {{flagicon|SUI}} [[Roger Federer]] <small>(6/7)</small> || {{flagicon|ESP}} [[David Ferrer]] ||6–3, 1–6, 6–2
|-
|[[2015 Western & Southern Open – Men's singles|2015]] || {{flagicon|SUI}} [[Roger Federer]] <small>(7/7)</small> || {{flagicon|SRB}} [[Novak Djokovic]] ||7–6<sup>(7–1)</sup>, 6–3
|-
|[[2016 Western & Southern Open – Men's singles|2016]] || {{flagicon|CRO}} [[Marin Čilić]] <small>(1/1)</small> || {{flagicon|GBR}} [[Andy Murray]] ||6–4, 7–5
|-
|[[2017 Western & Southern Open – Men's singles|2017]] || {{flagicon|BUL}} [[Grigor Dimitrov]] <small>(1/1)</small> || {{flagicon|AUS}} [[Nick Kyrgios]] || 6–3, 7–5
|-
|[[2018 Western & Southern Open – Men's singles|2018]] ||{{flagicon|SRB}} [[Novak Djokovic]] <small>(1/3)</small> || {{flagicon|SUI}} [[Roger Federer]]  || 6–4, 6–4
|-
|[[2019 Western & Southern Open – Men's singles|2019]] ||{{flagicon|RUS}} [[Daniil Medvedev]] <small>(1/1)</small> || {{flagicon|BEL}} [[David Goffin]]  || 7–6<sup>(7–3)</sup>, 6–4
|-
|[[2020 Western & Southern Open – Men's singles|2020]] ||{{flagicon|SRB}} [[Novak Djokovic]] <small>(2/3)</small> || {{flagicon|CAN}} [[Milos Raonic]]  || 1–6, 6–3, 6–4
|-
|[[2021 Western & Southern Open – Men's singles|2021]] || {{flagicon|GER}} [[Alexander Zverev]] <small>(1/1)</small> || {{flagicon|RUS}} [[Andrey Rublev]] || 6–2, 6–3
|-
|[[2022 Western & Southern Open – Men's singles|2022]] || {{flagicon|CRO}} [[Borna Ćorić]] <small>(1/1)</small> || {{flagicon|GRE}} [[Stefanos Tsitsipas]] || 7–6<sup>(7–0)</sup>, 6–2
|-
|[[2023 Western & Southern Open – Men's singles|2023]] || {{flagicon|SRB}} [[Novak Djokovic]] <small>(3/3)</small> || {{flagicon|ESP}} [[Carlos Alcaraz]] || 5–7, 7–6<sup>(9–7)</sup>, 7–6<sup>(7–4)</sup>
|-
|[[2024 Western & Southern Open – Men's singles|2024]] || {{flagicon|ITA}} [[Jannik Sinner]] <small>(1/1)</small> || {{flagicon|USA}} [[Frances Tiafoe]] || 7–6<sup>(7–4)</sup>, 6–2
|}

{{notelist}}

===Women's singles===
{| class="wikitable sortable" style="font-size:1.00em; line-height:1.5em;"
!Year!!Champions!!Runners-up!!Score
|-
| 1899 || {{flagicon|USA|1896}} [[Myrtle McAteer]] <small>(1/3)</small> || {{flagicon|USA|1896}} [[Juliette Atkinson]] || 7–5, 6–1, 4–6, 8–6
|-
| 1900 || {{flagicon|USA|1896}} [[Myrtle McAteer]] <small>(2/3)</small> || {{flagicon|USA|1896}} [[Maud Banks]] || 6–4, 6–8, 6–2, 6–3
|-
| 1901 || {{flagicon|USA|1896}} [[Winona Closterman]] <small>(1/2)</small> || {{flagicon|USA|1896}} [[Juliette Atkinson]] || 6–2, 8–6, 6–1
|-
| 1902 || {{flagicon|USA|1896}} [[Maud Banks]] <small>(1/1)</small> || {{flagicon|USA|1896}} [[Winona Closterman]] || 6–2, 6–1
|-
| 1903 || {{flagicon|USA|1896}} [[Winona Closterman]] <small>(2/2)</small> || {{flagicon|USA|1896}} [[Myrtle McAteer]] || 6–1, 5–7, 6–4
|-
| 1904 || {{flagicon|USA|1896}} [[Myrtle McAteer]] <small>(3/3)</small> || {{flagicon|USA|1896}} [[Winona Closterman]] || 7–5, 6–3
|-
| 1905 || {{flagicon|USA|1896}} [[May Sutton]] <small>(1/3)</small> || {{flagicon|USA|1896}} [[Myrtle McAteer]] || 6–0, 6–0
|-
| 1906 || {{flagicon|USA|1896}} [[May Sutton]] <small>(2/3)</small> || {{flagicon|USA|1896}} [[Florence Sutton]] || 7–5, 6–2
|-
| 1907 || {{flagicon|USA|1896}} [[May Sutton]] <small>(3/3)</small> || {{flagicon|USA|1896}} [[Martha Kinsey]] || 6–1, 6–1
|-
| 1908 || {{flagicon|USA|1908}} [[Martha Kinsey]] <small>(1/1)</small> || {{flagicon|USA|1908}} [[Marjorie Dodd]] || 4–6, 8–6, 6–2
|-
| 1909 || {{flagicon|GBR}} [[Edith Hannam]] <small>(1/1)</small> || {{flagicon|USA|1908}} [[Martha Kinsey]] || 6–3, 6–1
|-
| 1910 || {{flagicon|USA|1908}} [[Miriam Steever]] <small>(1/1)</small> || {{flagicon|CAN|1868}} [[Rhea Fairbairn]] || 4–6, 8–6, 6–0
|-
| 1911 || {{flagicon|USA|1908}} [[Marjorie Dodd]] <small>(1/2)</small> || {{flagicon|USA|1908}} [[Helen McLaughlin]] || 6–0, 6–2
|-
| 1912 || {{flagicon|USA|1912}} [[Marjorie Dodd]] <small>(2/2)</small> || {{flagicon|USA|1912}} [[May Sutton]] || default
|-
| 1913 || {{flagicon|USA|1912}} [[Ruth Sanders Cordes|Ruth Sanders]] <small>(1/5)</small> || {{flagicon|USA|1912}} [[Marjorie Dodd]] || 6–2, 6–3
|-
| 1914 || {{flagicon|USA|1912}} [[Ruth Sanders Cordes|Ruth Sanders]] <small>(2/5)</small> || {{flagicon|USA|1912}} [[Katharine Brown]] || 7–5, 5–7, 6–2
|-
| 1915 || {{flagicon|NOR}} [[Molla Bjurstedt]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Ruth Sanders Cordes|Ruth Sanders]] || 6–0, 6–4
|-
| 1916 || {{flagicon|USA|1912}} [[Martha Guthrie]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Marguerite Davis]] || 6–2, 2–6, 6–1
|-
| 1917 || {{flagicon|USA|1912}} [[Katharine Brown]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Mrs. Willis Adams]] || 7–5, 0–6, 6–4
|-
| 1918 || rowspan="2" colspan="3" bgcolor="#f5f5f5" align="center" | ''not contested''
|-
| 1919 
|-
| 1920 || {{flagicon|USA|1912}} [[Ruth Sanders Cordes]] <small>(3/5)</small> || {{flagicon|USA|1912}} Ruth King || 6–1, 6–0
|-
| 1921 || colspan="3"  align=center bgcolor="#f5f5f5"| ''Tournament suspended''
|-
| 1922 || {{flagicon|USA|1912}} [[Ruth Sanders Cordes]] <small>(4/5)</small> || {{flagicon|USA|1912}} [[Olga Strashun Weil|Olga Strashun]] || 6–3, 6–4
|-
| 1923 || {{flagicon|USA|1912}} [[Ruth Sanders Cordes]] <small>(5/5)</small> || {{flagicon|USA|1912}} [[Clara Louise Zinke]] || 6–0, 7–5
|-
| 1924 || {{flagicon|USA|1912}} [[Olga Strashun Weil|Olga Strashun]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Clara Louise Zinke]] || 6–4, 6–2
|-
| 1925 || {{flagicon|USA|1912}} [[Marian Leighton]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Clara Louise Zinke]] || 6–3, 6–2
|-
| 1926 || {{flagicon|USA|1912}} [[Clara Louise Zinke]] <small>(1/5)</small> || {{flagicon|USA|1912}} [[Olga Strashun Weil]] || 6–2, 6–2
|-
| 1927 || {{flagicon|USA|1912}} [[Clara Louise Zinke]] <small>(2/5)</small> || {{flagicon|USA|1912}} [[Marian Leighton]] || 6–4, 4–6, 4–1 ret.
|-
| 1928 || {{flagicon|USA|1912}} [[Marjorie Gladman]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Clara Louise Zinke]] || 6–4, 6–4
|-
| 1929 || {{flagicon|USA|1912}} [[Clara Louise Zinke]] <small>(3/5)</small> || {{flagicon|USA|1912}} [[Ruth Riese]] || 6–2, 6–3
|-
| 1930 || {{flagicon|USA|1912}} [[Clara Louise Zinke]] <small>(4/5)</small> || {{flagicon|USA|1912}} [[Ruth Riese]] || 6–2, 6–4
|-
| 1931 || {{flagicon|USA|1912}} [[Clara Louise Zinke]] <small>(5/5)</small> || {{flagicon|USA|1912}} [[Ruth Riese]] || 6–1, 6–1
|-
| 1932 || {{flagicon|USA|1912}} [[Dorothy Weisel Hack]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Clara Louise Zinke]] || 6–1, 6–0
|-
| 1933 || {{flagicon|USA|1912}} [[Muriel Adams]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Helen Fulton]] || 6–4, 6–4
|-
| 1934 || {{flagicon|USA|1912}} [[Gracyn Wheeler Kelleher|Gracyn Wheeler]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Esther Bartosh]] || default
|-
| 1935 || colspan="3"  align=center bgcolor="#f5f5f5"| ''Tournament suspended due to the [[Great Depression]]''
|-
| 1936 || {{flagicon|USA|1912}} [[Lila Porter]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Virginia Hollinger]] || 6–4, 6–3
|-
| 1937 || {{flagicon|USA|1912}} [[Virginia Hollinger]] <small>(1/2)</small> || {{flagicon|USA|1912}} [[Monica Nolan]] || 6–3, 6–2
|-
| 1938 || {{flagicon|USA|1912}} [[Virginia Hollinger]] <small>(2/2)</small> || {{flagicon|USA|1912}} [[Margaret Jessee]] || 8–6, 1–6, 6–0
|-
| 1939 || {{flagicon|USA|1912}} [[Catherine Wolf]] <small>(1/2)</small> || {{flagicon|USA|1912}} [[Virginia Hollinger]] || 6–2, 6–3
|-
| 1940 || {{flagicon|USA|1912}} [[Alice Marble]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Gracyn Wheeler Kelleher|Gracyn Wheeler]] || 6–3, 6–4
|-
| 1941 || {{flagicon|USA|1912}} [[Pauline Betz]] <small>(1/3)</small> || {{flagicon|USA|1912}} [[Mary Arnold (tennis)|Mary Arnold]] || 6–4, 6–3
|-
| 1942 || {{flagicon|USA|1912}} [[Catherine Wolf]] <small>(2/2)</small> || {{flagicon|USA|1912}} [[Monica Nolan]] || 6–4, 6–1
|-
| 1943 || {{flagicon|USA|1912}} [[Pauline Betz]] <small>(2/3)</small> || {{flagicon|USA|1912}} [[Catherine Wolf]] || 6–0, 6–2
|-
| 1944 || {{flagicon|USA|1912}} [[Dorothy Cheney]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Pauline Betz]] || 7–5, 6–4
|-
| 1945 || {{flagicon|USA|1912}} [[Pauline Betz]] <small>(3/3)</small> || {{flagicon|USA|1912}} [[Dorothy Cheney]] || 6–2, 6–0
|-
| 1946 || {{flagicon|USA|1912}} [[Virginia Kovacs]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Shirley Fry]] || 6–4, 6–1
|-
| 1947 || {{flagicon|USA|1912}} [[Betty Rosenquest Pratt|Betty Rosenquest]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Betty Hulbert James]] || 9–7, 6–2
|-
| 1948 || {{flagicon|USA|1912}} [[Dorothy Head Knode]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Mercedes Madden Lewis]] || 6–4, 6–4
|-
| 1949 || {{flagicon|ROU|1948}} [[Magda Rurac]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Beverly Baker Fleitz]] || 6–4, 2–6, 6–0
|-
| 1950 || {{flagicon|USA|1912}} [[Beverly Baker Fleitz]] <small>(1/1)</small> || {{flagicon|ROU|1948}} [[Magda Rurac]] || 5–7, 6–3, 9–7
|-
| 1951 || {{flagicon|USA|1912}} [[Pat Canning Todd]] <small>(1/1)</small> || {{flagicon|ROU|1948}} [[Magda Rurac]] || 6–3, 6–4
|-
| 1952 || {{flagicon|USA|1912}} [[Anita Kanter]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Doris Popple]] || 6–0, 6–1
|-
| 1953 || {{flagicon|AUS}} [[Thelma Coyne Long]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Anita Kanter]] || 7–5, 6–2
|-
| 1954 || {{flagicon|USA|1912}} [[Lois Felix]] <small>(1/2)</small> || {{flagicon|USA|1912}} [[Ethel Norton]] || 6–1, 6–3
|-
| 1955 || {{flagicon|USA|1912}} [[Mimi Arnold]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Barbara Breit]] || 6–4, 6–3
|-
| 1956 || {{flagicon|MEX|1934}} [[Yola Ramírez]] <small>(1/1)</small> || {{flagicon|USA|1912}} [[Mary Ann Mitchell]] || 7–5, 6–1
|-
| 1957 || {{flagicon|USA|1912}} [[Lois Felix]] <small>(2/2)</small> || {{flagicon|USA|1912}} [[Pat Naud]] || 7–5, 2–6, 7–5
|-
| 1958 || {{flagicon|USA|1912}} [[Gwyn Thomas (tennis)|Gwyn Thomas]] <small>(1/1)</small> || {{flagicon|MEX|1934}} [[Martha Hernandez]] || 6–1, 6–2
|-
| 1959 || {{flagicon|USA|1959}} [[Donna Floyd]] <small>(1/1)</small> || {{flagicon|USA|1959}} [[Carol Hanks Aucamp|Carol Hanks]] || 5–7, 6–2, 6–4
|-
| 1960 || {{flagicon|USA}} [[Carol Hanks Aucamp|Carol Hanks]] <small>(1/1)</small> || {{flagicon|USA}} [[Farel Footman]] || 6–2, 4–6, 6–3
|-
| 1961 || {{flagicon|USA}} [[Peachy Kellmeyer]] <small>(1/1)</small> || {{flagicon|USA}} [[Carole Caldwell Graebner]] || 3–6, 12–10, 7–5
|-
| 1962 || {{flagicon|USA}} [[Julie Heldman]] <small>(1/1)</small> || {{flagicon|USA}} [[Roberta Alison]] || 6–4, 6–4
|-
| 1963 || {{flagicon|USA}} [[Stephanie DeFina]] <small>(1/2)</small> || {{flagicon|USA}} [[Jane Bartkowicz]] || 7–5, 6–2
|-
| 1964 || {{flagicon|USA}} [[Jean Danilovich]] <small>(1/1)</small> || {{flagicon|USA}} [[Alice Tym]] || 6–1, 6–2
|-
| 1965 || {{flagicon|USA}} [[Stephanie DeFina]] <small>(2/2)</small> || {{flagicon|USA}} [[Roberta Alison]] || 10–8, 5–7, 6–4
|-
| 1966 || {{flagicon|USA}} [[Jane Bartkowicz]] <small>(1/2)</small> || {{flagicon|USA}} [[Peachy Kellmeyer]] || 6–3, 6–3
|-
| 1967 || {{flagicon|USA}} [[Jane Bartkowicz]] <small>(2/2)</small> || {{flagicon|USA}} [[Patsy Rippy]] || 6–4, 6–1
|-
| 1968 || {{flagicon|USA}} [[Linda Tuero]] <small>(1/1)</small> || {{flagicon|USA}} [[Tory Fretz]] || 6–1, 6–2
|-
!colspan=5 align=center |↓  [[Open Era (tennis)|Open era]]  ↓
|-
| 1969 || {{flagicon|AUS}} [[Lesley Turner Bowrey]] <small>(1/1)</small> || {{flagicon|FRA}} [[Gail Chanfreau]] || 1–6, 7–5, 10–10 ret.
|-
| 1970 || {{flagicon|USA}} [[Rosemary Casals]] <small>(1/1)</small> || {{flagicon|USA}} [[Nancy Richey Gunter]] || 6–3, 6–3
|-
| [[1971 Cincinnati Open#Women's singles|1971]] || {{flagicon|GBR}} [[Virginia Wade]] <small>(1/1)</small> || {{flagicon|USA}} [[Linda Tuero]] || 6–3, 6–3
|-
| 1972 || {{flagicon|AUS}} [[Margaret Court]] <small>(1/1)</small> || {{flagicon|AUS}} [[Evonne Goolagong]] || 3–6, 6–2, 7–5
|-
| [[1973 Cincinnati Open#Women's singles|1973]] || {{flagicon|AUS}} [[Evonne Goolagong]] <small>(1/1)</small> || {{flagicon|USA}} [[Chris Evert]] || 6–2, 7–5
|-
| 1974–1987 || colspan="3"  align=center bgcolor="#f5f5f5"| ''not held''
|-
| [[1988 Pringles Light Classic – Singles|1988]] || {{flagicon|USA}} [[Barbara Potter]] <small>(1/1)</small> || {{flagicon|CAN}} [[Helen Kelesi]] || 6–2, 6–2
|-
| 1989–2003 || colspan=3 align=center bgcolor="#f5f5f5"| ''not held''
|-
| [[2004 Western & Southern Financial Group Women's Open – Singles|2004]] || {{flagicon|USA}}  [[Lindsay Davenport]] <small>(1/1)</small> || {{flagicon|RUS}} [[Vera Zvonareva]] || 6–3, 6–2
|-
| [[2005 Western & Southern Financial Group Women's Open – Singles|2005]] || {{flagicon|SUI}} [[Patty Schnyder]] <small>(1/1)</small> || {{flagicon|JPN}} [[Akiko Morigami]] || 6–4, 6–0
|-
| [[2006 Western & Southern Financial Group Women's Open – Singles|2006]] || {{flagicon|RUS}}  [[Vera Zvonareva]] <small>(1/1)</small> || {{flagicon|SLO}} [[Katarina Srebotnik]] || 6–2, 6–4
|-
| [[2007 Western & Southern Financial Group Women's Open – Singles|2007]] || {{flagicon|RUS}} [[Anna Chakvetadze]] <small>(1/1)</small> || {{flagicon|JPN}} [[Akiko Morigami]] || 6–1, 6–3
|-
| [[2008 Western & Southern Financial Group Women's Open – Singles|2008]] || {{flagicon|RUS}} [[Nadia Petrova]] <small>(1/1)</small> || {{flagicon|FRA}} [[Nathalie Dechy]] || 6–2, 6–1
|-
| [[2009 Western & Southern Financial Group Women's Open – Singles|2009]] || {{flagicon|SRB|2004}} [[Jelena Janković]] <small>(1/1)</small> || {{flagicon|RUS}} [[Dinara Safina]] || 6–4, 6–2
|-
| [[2010 Western & Southern Financial Group Women's Open – Singles|2010]] || {{flagicon|BEL}} [[Kim Clijsters]] <small>(1/1)</small> || {{flagicon|RUS}} [[Maria Sharapova]] || 2–6, 7–6<sup>(7–4)</sup>, 6–2
|-
| [[2011 Western & Southern Financial Group Women's Open – Singles|2011]]  || {{flagicon|RUS}} [[Maria Sharapova]] <small>(1/1)</small> || {{flagicon|SRB}} [[Jelena Janković]] || 4–6, 7–6<sup>(7–3)</sup>, 6–3
|-
| [[2012 Western & Southern Open – Women's singles|2012]] || {{flagicon|CHN}} [[Li Na]] <small>(1/1)</small> || {{flagicon|GER}} [[Angelique Kerber]] || 1–6, 6–3, 6–1
|-
| [[2013 Western & Southern Open – Women's singles|2013]] || {{flagicon|BLR}} [[Victoria Azarenka]] <small>(1/2)</small> || {{flagicon|USA}} [[Serena Williams]] || 2–6, 6–2, 7–6<sup>(8–6)</sup>
|-
| [[2014 Western & Southern Open – Women's singles|2014]] || {{flagicon|USA}} [[Serena Williams]] <small>(1/2)</small> || {{flagicon|SRB}} [[Ana Ivanovic]] || 6–4, 6–1
|-
| [[2015 Western & Southern Open – Women's singles|2015]] || {{flagicon|USA}} [[Serena Williams]] <small> (2/2) </small>|| {{flagicon|ROU}} [[Simona Halep]]  || 6–3, 7–6<sup>(7–5)</sup>
|-
| [[2016 Western & Southern Open – Women's singles|2016]] || {{flagicon|CZE}} [[Karolína Plíšková]] <small>(1/1)</small> || {{flagicon|GER}} [[Angelique Kerber]] || 6–3, 6–1
|-
| [[2017 Western & Southern Open – Women's singles|2017]] || {{flagicon|ESP}} [[Garbiñe Muguruza]] <small>(1/1)</small> || {{flagicon|ROU}} [[Simona Halep]] || 6–1, 6–0
|-
| [[2018 Western & Southern Open – Women's singles|2018]] || {{flagicon|NED}} [[Kiki Bertens]] <small>(1/1)</small> || {{flagicon|ROU}} [[Simona Halep]] || 2–6, 7–6<sup>(8–6)</sup>, 6–2
|-
| [[2019 Western & Southern Open – Women's singles|2019]] || {{flagicon|USA}} [[Madison Keys]] <small>(1/1)</small> || {{flagicon|RUS}} [[Svetlana Kuznetsova]] || 7–5, 7–6<sup>(7–5)</sup>
|-
| [[2020 Western & Southern Open – Women's singles|2020]] || {{flagicon|BLR}} [[Victoria Azarenka]] <small>(2/2)</small> || {{flagicon|JPN}} [[Naomi Osaka]] || walkover
|-
| [[2021 Western & Southern Open – Women's singles|2021]] || {{flagicon|AUS}} [[Ashleigh Barty]] <small>(1/1)</small> || {{flagicon|SUI}} [[Jil Teichmann]] || 6–3, 6–1
|-
| [[2022 Western & Southern Open – Women's singles|2022]] || {{flagicon|FRA}} [[Caroline Garcia]] <small>(1/1)</small> || {{flagicon|CZE}} [[Petra Kvitová]] || 6–2, 6–4
|-
| [[2023 Western & Southern Open – Women's singles|2023]] || {{flagicon|USA}} [[Coco Gauff]] <small>(1/1)</small> || {{flagicon|CZE}} [[Karolína Muchová]] || 6–3, 6–4
|-
| [[2024 Western & Southern Open – Women's singles|2024]] || {{flagicon|}} [[Aryna Sabalenka]] <small>(1/1)</small> || {{flagicon|USA}} [[Jessica Pegula]] || 6–3, 7–5
|-
|}

===Men's doubles (Open era)===
{| class="wikitable sortable" style="font-size:1.00em; line-height:1.5em;"
!Year!!Champions!!Runners-up!!Score
|-
| [[1969 Cincinnati Open#Doubles|1969]] || {{flagicon|USA}} [[Bob Lutz (tennis)|Bob Lutz]] <br /> {{flagicon|USA}} [[Stan Smith]] || {{flagicon|USA}} [[Arthur Ashe]] <br /> {{flagicon|USA}} [[Charlie Pasarell]] || 6–3, 6–4
|-
|colspan=5 align=center |↓  [[Grand Prix tennis circuit|Grand Prix circuit]]  ↓
|-
| [[1970 Cincinnati Open#Doubles|1970]] || {{flagicon|ROU|1965}} [[Ilie Năstase]] <br /> {{flagicon|ROU|1965}} [[Ion Țiriac]] || {{flagicon|RSA|1928}} [[Bob Hewitt]] <br /> {{flagicon|RSA|1928}} [[Frew McMillan]] || 6–3, 6–4
|-
| [[1971 Cincinnati Open#Men's doubles|1971]] || {{flagicon|USA}} [[Stan Smith]] <small>(2)</small> <br /> {{flagicon|USA}} [[Erik van Dillen]] || {{flagicon|USA}} [[Sandy Mayer]] <br /> {{flagicon|USA}} [[Roscoe Tanner]] || 6–4, 6–4
|-
| [[1972 Cincinnati Open#Doubles|1972]] || {{flagicon|RSA|1928}} [[Bob Hewitt]] <br /> {{flagicon|RSA|1928}} [[Frew McMillan]] || {{flagicon|USA}} [[Paul Gerken]] <br /> {{flagicon|VEN|1954}} [[Humphrey Hose]] || 7–6, 6–4
|-
| [[1973 Cincinnati Open#Men's doubles|1973]] || {{flagicon|AUS}} [[John Alexander (tennis)|John Alexander]] <br /> {{flagicon|AUS}} [[Phil Dent]] || {{flagicon|USA}} [[Brian Gottfried]] <br /> {{flagicon|MEX}} [[Raúl Ramírez]] || 1–6, 7–6, 7–6
|-
| [[1974 Cincinnati Open#Doubles|1974]] || {{flagicon|USA}} [[Dick Dell]] <br /> {{flagicon|USA}} [[Sherwood Stewart]] || {{flagicon|USA}} [[James Delaney (tennis)|James Delaney]] <br /> {{flagicon|USA}} [[John Whitlinger]] || 4–6, 7–6, 6–2
|-
| [[1975 Cincinnati Open#Doubles|1975]] || {{flagicon|AUS}} [[Phil Dent]] <small>(2)</small> <br /> {{flagicon|RSA|1928}} [[Cliff Drysdale]] || {{flagicon|MEX}} [[Marcelo Lara]] <br /> {{flagicon|MEX}} [[Joaquín Loyo-Mayo]] || 7–6, 6–4
|-
| [[1976 Cincinnati Open#Doubles|1976]] || {{flagicon|USA}} [[Stan Smith]] <small>(3)</small> <br /> {{flagicon|USA}} [[Erik van Dillen]] <small>(2)</small> || {{flagicon|USA}} [[Eddie Dibbs]] <br /> {{flagicon|USA}} [[Harold Solomon]] || 6–1, 6–1
|-
| [[1977 Cincinnati Open#Doubles|1977]] || {{flagicon|AUS}} [[John Alexander (tennis)|John Alexander]] <small>(2)</small> <br /> {{flagicon|AUS}} [[Phil Dent]] <small>(3)</small> || {{flagicon|RSA|1928}} [[Bob Hewitt]] <br /> {{flagicon|USA}} [[Roscoe Tanner]] || 6–3, 7–6
|-
| [[1978 Cincinnati Open#Doubles|1978]] || {{flagicon|USA}} [[Gene Mayer]] <br /> {{flagicon|MEX}} [[Raúl Ramírez]] || {{flagicon|EGY|1972}} [[Ismail El Shafei]] <br /> {{flagicon|NZL}} [[Brian Fairlie]] || 6–3, 6–3
|-
| [[1979 Cincinnati Open#Doubles|1979]] || {{flagicon|USA}} [[Brian Gottfried]] <br /> {{flagicon|ROU|1965}} [[Ilie Năstase]] <small>(2)</small> || {{flagicon|USA}} [[Bob Lutz (tennis)|Bob Lutz]] <br /> {{flagicon|USA}} [[Stan Smith]] || 1–6, 6–3, 7–6
|-
| [[1980 Cincinnati Open#Doubles|1980]] || {{flagicon|USA}} [[Bruce Manson]] <br /> {{flagicon|USA}} [[Brian Teacher]] || {{flagicon|POL}} [[Wojtek Fibak]] <br /> {{flagicon|TCH}} [[Ivan Lendl]] || 6–7, 7–5, 6–4
|-
| [[1981 Cincinnati Open#Doubles|1981]] || {{flagicon|USA}} [[John McEnroe]] <br /> {{flagicon|USA}} [[Ferdi Taygan]] || {{flagicon|USA}} [[Bob Lutz (tennis)|Bob Lutz]] <br /> {{flagicon|USA}} [[Stan Smith]] || 7–6, 6–3
|-
| [[1982 Cincinnati Open#Doubles|1982]] || {{flagicon|USA}} [[Peter Fleming (tennis)|Peter Fleming]] <br /> {{flagicon|USA}} [[John McEnroe]] <small>(2)</small> || {{flagicon|USA}} [[Steve Denton]] <br /> {{flagicon|AUS}} [[Mark Edmondson]] || 6–2, 6–3
|-
| [[1983 Cincinnati Open#Doubles|1983]]|| {{flagicon|USA}} [[Victor Amaya]] <br /> {{flagicon|USA}} [[Tim Gullikson]] || {{flagicon|BRA|1968}} [[Carlos Kirmayr]] <br /> {{flagicon|BRA|1968}} [[Cássio Motta]] || 6–4, 6–3
|-
| [[1984 Cincinnati Open#Doubles|1984]] || {{flagicon|PAR|1954}} [[Francisco González (tennis)|Francisco González]] <br /> {{flagicon|USA}} [[Matt Mitchell (tennis)|Matt Mitchell]] || {{flagicon|USA}} [[Sandy Mayer]] <br /> {{flagicon|HUN}} [[Balázs Taróczy]] || 4–6, 6–3, 7–6
|-
| [[1985 Cincinnati Open#Doubles|1985]] || {{flagicon|SWE}} [[Stefan Edberg]] <br /> {{flagicon|SWE}} [[Anders Järryd]] || {{flagicon|SWE}} [[Joakim Nyström]] <br /> {{flagicon|SWE}} [[Mats Wilander]] || 4–6, 6–2, 6–3
|-
| [[1986 Cincinnati Open#Doubles|1986]] || {{flagicon|AUS}} [[Mark Kratzmann]] <br /> {{flagicon|AUS}} [[Kim Warwick]] || {{flagicon|RSA|1928}} [[Christo Steyn]] <br /> {{flagicon|RSA|1928}} [[Danie Visser]] || 6–3, 6–4
|-
| [[1987 Cincinnati Open#Doubles|1987]] || {{flagicon|USA}} [[Ken Flach]] <br /> {{flagicon|USA}} [[Robert Seguso]] || {{flagicon|USA}} [[Steve Denton]] <br /> {{flagicon|AUS}} [[John Fitzgerald (tennis)|John Fitzgerald]] || 7–5, 6–3
|-
| [[1988 Cincinnati Open#Men's doubles|1988]] || {{flagicon|USA}} [[Rick Leach]] <br /> {{flagicon|USA}} [[Jim Pugh]] || {{flagicon|USA}} [[Jim Grabb]] <br /> {{flagicon|USA}} [[Patrick McEnroe]] || 6–2, 6–4
|-
| [[1989 Cincinnati Open – Doubles|1989]] || {{flagicon|USA}} [[Ken Flach]] <small>(2)</small> <br /> {{flagicon|USA}} [[Robert Seguso]] <small>(2)</small> || {{flagicon|RSA|1928}} [[Pieter Aldrich]] <br /> {{flagicon|RSA|1928}} [[Danie Visser]] || 6–4, 6–4
|-
|colspan=5 align=center |↓  [[ATP Tour Masters 1000]]  ↓
|-
| [[1990 Thriftway ATP Championships – Doubles|1990]] || {{flagicon|AUS}} [[Darren Cahill]] <br /> {{flagicon|AUS}} [[Mark Kratzmann]] <small>(2)</small> || {{flagicon|GBR}} [[Neil Broad]] <br /> {{flagicon|RSA|1928}} [[Gary Muller]] || 7–6, 6–2
|-
| [[1991 Thriftway ATP Championships – Doubles|1991]] || {{flagicon|USA}} [[Ken Flach]] <small>(3)</small> <br /> {{flagicon|USA}} [[Robert Seguso]] <small>(3)</small> || {{flagicon|CAN}} [[Grant Connell]] <br /> {{flagicon|CAN}} [[Glenn Michibata]] || 6–7, 6–4, 7–5
|-
| [[1992 Thriftway ATP Championships – Doubles|1992]] || {{flagicon|AUS}} [[Todd Woodbridge]] <br /> {{flagicon|AUS}} [[Mark Woodforde]] || {{flagicon|USA}} [[Patrick McEnroe]] <br /> {{flagicon|USA}} [[Jonathan Stark (tennis)|Jonathan Stark]] || 6–3, 1–6, 6–3
|-
| [[1993 Thriftway ATP Championships – Doubles|1993]] || {{flagicon|USA}} [[Andre Agassi]] <br /> {{flagicon|CZE}} [[Petr Korda]] || {{flagicon|SWE}} [[Stefan Edberg]] <br /> {{flagicon|SWE}} [[Henrik Holm (tennis)|Henrik Holm]] || 7–6, 6–4
|-
| [[1994 Thriftway ATP Championships – Doubles|1994]] || {{flagicon|USA}} [[Alex O'Brien]] <br /> {{flagicon|AUS}} [[Sandon Stolle]] || {{flagicon|RSA|1928}} [[Wayne Ferreira]] <br /> {{flagicon|AUS}} [[Mark Kratzmann]] || 6–7, 6–3, 6–2
|-
| [[1995 Thriftway ATP Championships – Doubles|1995]] || {{flagicon|AUS}} [[Todd Woodbridge]] <small>(2)</small> <br /> {{flagicon|AUS}} [[Mark Woodforde]] <small>(2)</small> || {{flagicon|BAH}} [[Mark Knowles]] <br /> {{flagicon|CAN}} [[Daniel Nestor]] || 6–2, 3–0 ret.
|-
| [[1996 Great American Insurance ATP Championships – Doubles|1996]] || {{flagicon|BAH}} [[Mark Knowles]] <br /> {{flagicon|CAN}} [[Daniel Nestor]] || {{flagicon|AUS}} [[Sandon Stolle]] <br /> {{flagicon|CZE}} [[Cyril Suk]] || 3–6, 6–3, 6–4
|-
| [[1997 Great American Insurance ATP Championships – Doubles|1997]] || {{flagicon|AUS}} [[Todd Woodbridge]] <small>(3)</small> <br /> {{flagicon|AUS}} [[Mark Woodforde]] <small>(3)</small> || {{flagicon|AUS}} [[Mark Philippoussis]] <br /> {{flagicon|AUS}} [[Patrick Rafter]] || 7–6, 4–6, 6–4
|-
| [[1998 Great American Insurance ATP Championships – Doubles|1998]] || {{flagicon|BAH}} [[Mark Knowles]] <small>(2)</small> <br /> {{flagicon|CAN}} [[Daniel Nestor]] <small>(2)</small> || {{flagicon|FRA}} [[Olivier Delaître]] <br /> {{flagicon|FRA}} [[Fabrice Santoro]] || 6–1, 2–1 ret.
|-
| [[1999 Great American Insurance ATP Championships – Doubles|1999]] || {{flagicon|ZIM}} [[Byron Black]] <br /> {{flagicon|SWE}} [[Jonas Björkman]] || {{flagicon|AUS}} [[Todd Woodbridge]] <br /> {{flagicon|AUS}} [[Mark Woodforde]] || 6–3, 7–6<sup>(8–6)</sup>
|-
| [[2000 Cincinnati Masters – Doubles|2000]] || {{flagicon|AUS}} [[Todd Woodbridge]] <small>(4)</small> <br /> {{flagicon|AUS}} [[Mark Woodforde]] <small>(4)</small>|| {{flagicon|RSA}} [[Ellis Ferreira]] <br /> {{flagicon|USA}} [[Rick Leach]] || 7–6<sup>(8–6)</sup>, 6–4
|-
| [[2001 Cincinnati Masters – Doubles|2001]] || {{flagicon|IND}} [[Mahesh Bhupathi]] <br /> {{flagicon|IND}} [[Leander Paes]] || {{flagicon|CZE}} [[Martin Damm]] <br /> {{flagicon|GER}} [[David Prinosil]] || 7–6<sup>(7–3)</sup>, 6–3
|-
| [[2002 Western & Southern Financial Group Masters – Doubles|2002]] || {{flagicon|USA}} [[James Blake (tennis)|James Blake]] <br /> {{flagicon|USA}} [[Todd Martin]] || {{flagicon|IND}} [[Mahesh Bhupathi]] <br /> {{flagicon|BLR|1995}} [[Max Mirnyi]] || 7–5, 6–3
|-
| [[2003 Western & Southern Financial Group Masters – Doubles|2003]] || {{flagicon|USA}} [[Bob Bryan]] <br /> {{flagicon|USA}} [[Mike Bryan]] || {{flagicon|AUS}} [[Wayne Arthurs (tennis)|Wayne Arthurs]] <br /> {{flagicon|AUS}} [[Paul Hanley (tennis)|Paul Hanley]] || 7–5, 7–6<sup>(7–5)</sup>
|-
| [[2004 Western & Southern Financial Group Masters – Doubles|2004]] || {{flagicon|BAH}} [[Mark Knowles]] <small>(3)</small> <br /> {{flagicon|CAN}} [[Daniel Nestor]] <small>(3)</small> || {{flagicon|SWE}} [[Jonas Björkman]] <br /> {{flagicon|AUS}} [[Todd Woodbridge]] || 6–2, 3–6, 6–3
|-
| [[2005 Western & Southern Financial Group Masters – Doubles|2005]] || {{flagicon|SWE}} [[Jonas Björkman]] <small>(2)</small> <br /> {{flagicon|BLR|1995}} [[Max Mirnyi]] || {{flagicon|ZIM}} [[Wayne Black]] <br /> {{flagicon|ZIM}} [[Kevin Ullyett]] || 7–6<sup>(7–3)</sup>, 6–2
|-
| [[2006 Western & Southern Financial Group Masters – Doubles|2006]] || {{flagicon|SWE}} [[Jonas Björkman]] <small>(3)</small><br /> {{flagicon|BLR|1995}} [[Max Mirnyi]] <small>(2)</small> || {{flagicon|USA}} [[Bob Bryan]] <br /> {{flagicon|USA}} [[Mike Bryan]] || 3–6, 6–3, [10–7]
|-
| [[2007 Western & Southern Financial Group Masters – Doubles|2007]] || {{flagicon|ISR}} [[Jonathan Erlich]] <br /> {{flagicon|ISR}} [[Andy Ram]] || {{flagicon|USA}} [[Bob Bryan]] <br /> {{flagicon|USA}} [[Mike Bryan]] || 4–6, 6–3, [13–11]
|-
| [[2008 Western & Southern Financial Group Masters – Doubles|2008]] || {{flagicon|USA}} [[Bob Bryan]] <small>(2)</small> <br /> {{flagicon|USA}} [[Mike Bryan]] <small>(2)</small> || {{flagicon|ISR}} [[Jonathan Erlich]] <br /> {{flagicon|ISR}} [[Andy Ram]] || 4–6, 7–6<sup>(7–2)</sup>, [10–7]
|-
| [[2009 Western & Southern Financial Group Masters – Doubles|2009]] || {{flagicon|CAN}} [[Daniel Nestor]] <small>(4)</small> <br /> {{flagicon|SRB|2004}} [[Nenad Zimonjić]] || {{flagicon|USA}} [[Bob Bryan]] <br /> {{flagicon|USA}} [[Mike Bryan]]  || 3–6, 7–6<sup>(7–2)</sup>, [15–13]
|-
| [[2010 Western & Southern Financial Group Masters – Doubles|2010]] || {{flagicon|USA}} [[Bob Bryan]] <small>(3)</small> <br /> {{flagicon|USA}} [[Mike Bryan]] <small>(3)</small> || {{flagicon|IND}} [[Mahesh Bhupathi]] <br /> {{flagicon|BLR|1995}} [[Max Mirnyi]] || 6–3, 6–4
|-
| [[2011 Western & Southern Open – Men's doubles|2011]] || {{flagicon|IND}} [[Mahesh Bhupathi]] <small>(2)</small> <br /> {{flagicon|IND}} [[Leander Paes]] <small>(2)</small> || {{flagicon|FRA}} [[Michaël Llodra]] <br /> {{flagicon|SRB}} [[Nenad Zimonjić]] || 7–6<sup>(7–4)</sup>, 7–6<sup>(7–2)</sup>
|-
| [[2012 Western & Southern Open – Men's doubles|2012]] || {{flagicon|SWE}} [[Robert Lindstedt]] <br /> {{flagicon|ROU}} [[Horia Tecău]] || {{flagicon|IND}} [[Mahesh Bhupathi]] <br /> {{flagicon|IND}} [[Rohan Bopanna]] || 6–4, 6–4
|-
| [[2013 Western & Southern Open – Men's doubles|2013]] || {{flagicon|USA}} [[Bob Bryan]] <small>(4)</small> <br /> {{flagicon|USA}} [[Mike Bryan]] <small>(4)</small>|| {{flagicon|ESP}} [[Marcel Granollers]] <br /> {{flagicon|ESP}} [[Marc López]] || 6–4, 4–6, [10–4]
|-
| [[2014 Western & Southern Open – Men's doubles|2014]] || {{flagicon|USA}} [[Bob Bryan]] <small>(5)</small> <br /> {{flagicon|USA}} [[Mike Bryan]] <small>(5)</small>|| {{flagicon|CAN}} [[Vasek Pospisil]] <br /> {{flagicon|USA}} [[Jack Sock]] || 6–3, 6–2
|-
| [[2015 Western & Southern Open – Men's doubles|2015]] || {{flagicon|CAN}} [[Daniel Nestor]] <small>(5)</small> <br /> {{flagicon|FRA}} [[Édouard Roger-Vasselin]] || {{flagicon|POL}} [[Marcin Matkowski]] <br /> {{flagicon|SRB}} [[Nenad Zimonjić]] || 6–2, 6–2
|-
| [[2016 Western & Southern Open – Men's doubles|2016]] || {{flagicon|CRO}} [[Ivan Dodig]] <br /> {{flagicon|BRA}} [[Marcelo Melo]] || {{flagicon|NED}} [[Jean-Julien Rojer]] <br /> {{flagicon|ROU}} [[Horia Tecău]] || 7–6<sup>(7–5)</sup>, 6–7<sup>(5–7)</sup>, [10–6]
|-
| [[2017 Western & Southern Open – Men's doubles|2017]] || {{flagicon|FRA}} [[Pierre-Hugues Herbert]] <br /> {{flagicon|FRA}} [[Nicolas Mahut]] || {{flagicon|GBR}} [[Jamie Murray]] <br /> {{flagicon|BRA}} [[Bruno Soares]] || 7–6<sup>(8–6)</sup>, 6–4
|-
| [[2018 Western & Southern Open – Men's doubles|2018]] || {{flagicon|GBR}} [[Jamie Murray]] <br /> {{flagicon|BRA}} [[Bruno Soares]] || {{flagicon|COL}} [[Juan Sebastián Cabal]] <br /> {{flagicon|COL}} [[Robert Farah (tennis)|Robert Farah]] || 4–6, 6–3, [10–6]
|-
| [[2019 Western & Southern Open – Men's doubles|2019]] || {{flagicon|CRO}} [[Ivan Dodig]] <small>(2)</small> <br /> {{flagicon|SVK}} [[Filip Polášek]] || {{flagicon|COL}} [[Juan Sebastián Cabal]] <br /> {{flagicon|COL}} [[Robert Farah (tennis)|Robert Farah]] || 4–6, 6–4, [10–6]
|-
| [[2020 Western & Southern Open – Men's doubles|2020]] || {{flagicon|ESP}} [[Pablo Carreño Busta]] <br /> {{flagicon|AUS}} [[Alex de Minaur]] || {{flagicon|GBR}} [[Jamie Murray]] <br /> {{flagicon|GBR}} [[Neal Skupski]] || 6–2, 7–5
|-
| [[2021 Western & Southern Open – Men's doubles|2021]] || {{flagicon|ESP}} [[Marcel Granollers]] <br /> {{flagicon|ARG}} [[Horacio Zeballos]] || {{flagicon|USA}} [[Steve Johnson (tennis)|Steve Johnson]] <br /> {{flagicon|USA}} [[Austin Krajicek]] || 7–6<sup>(7–5)</sup>, 7–6<sup>(7–5)</sup>
|-
| [[2022 Western & Southern Open – Men's doubles|2022]] || {{flagicon|USA}} [[Rajeev Ram]] <br /> {{flagicon|GBR}} [[Joe Salisbury]] || {{flagicon|GER}} [[Tim Pütz]] <br /> {{flagicon|NZL}} [[Michael Venus (tennis)|Michael Venus]] || 7–6<sup>(7–4)</sup>, 7–6<sup>(7–5)</sup>
|-
| [[2023 Western & Southern Open – Men's doubles|2023]] || {{flagicon|ARG}} [[Máximo González]] <br /> {{flagicon|ARG}} [[Andrés Molteni]] || {{flagicon|GBR}} [[Jamie Murray]] <br /> {{flagicon|NZL}} [[Michael Venus (tennis)|Michael Venus]] || 3–6, 6–1, [11–9]
|-
| [[2024 Western & Southern Open – Men's doubles|2024]] || {{flagicon|ESA}} [[Marcelo Arévalo]] <br /> {{flagicon|CRO}} [[Mate Pavić]] || {{flagicon|USA}} [[Mackenzie McDonald]] <br /> {{flagicon|USA}} [[Alex Michelsen]] || 6–2, 6–4
|}

===Women's doubles (Open era)===
{| class="wikitable sortable" style="font-size:1.00em; line-height:1.5em;"
!Year!!Champions!!Runners-up!!Score
|-
| 1969 || {{flagicon|AUS}} [[Kerry Harris]] <br /> {{flagicon|USA}} [[Valerie Ziegenfuss]] || {{flagicon|USA}} [[Emilie Burrer]]  <br /> {{flagicon|USA}} [[Pam Richmond]] || 6–3, 9–7
|-
| 1970 || {{flagicon|USA}} [[Rosie Casals]] <br /> {{flagicon|FRA}} [[Gail Chanfreau]] || {{flagicon|AUS}} [[Helen Gourlay]] <br /> {{flagicon|RSA|1928}} [[Pat Walkden]] || 12–10, 6–1
|-
| [[1971 Cincinnati Open#Women's doubles|1971]] || {{flagicon|AUS}} [[Helen Gourlay]] <br /> {{flagicon|AUS}} [[Kerry Harris]] <small>(2)</small> || {{flagicon|FRA}} [[Gail Chanfreau]] <br /> {{flagicon|GBR}} [[Winnie Shaw]] || 6–4, 6–4
|-
| 1972 || {{flagicon|AUS}} [[Margaret Court]] <br /> {{flagicon|AUS}} [[Evonne Goolagong Cawley|Evonne Goolagong]] || {{flagicon|RSA|1928}} [[Brenda Kirk]] <br /> {{flagicon|RSA|1928}} [[Pat Walkden|Pat Pretorius]] || 6–4, 6–1
|-
| [[1973 Cincinnati Open#Women's doubles|1973]] || {{flagicon|RSA|1928}} [[Pat Walkden|Pat Pretorius]] <br /> {{flagicon|RSA|1928}} [[Ilana Kloss]] || {{flagicon|AUS}} [[Evonne Goolagong Cawley|Evonne Goolagong]] <br /> {{flagicon|AUS}} [[Janet Young (tennis)|Janet Young]] || 7–6, 3–6, 6–2
|-
|1974–1987 || colspan="3"  align=center bgcolor="#f5f5f5"| ''not held''
|-
| [[1988 Pringles Light Classic – Doubles|1988]] || {{flagicon|USA}} [[Beth Herr]] <br /> {{flagicon|USA}} [[Candy Reynolds]] || {{flagicon|USA}} [[Lindsay Bartlett]] <br /> {{flagicon|CAN}} [[Helen Kelesi]] || 4–6, 7–6<sup>(11–9)</sup>, 6–1
|-
|1989–2003 || colspan="3"  align=center bgcolor="#f5f5f5"| ''not held''
|-
| [[2004 Western & Southern Financial Group Women's Open – Doubles|2004]] || {{flagicon|USA}} [[Jill Craybas]] <br /> {{flagicon|GER}} [[Marlene Weingärtner]] || {{flagicon|SUI}} [[Emmanuelle Gagliardi]] <br /> {{flagicon|GER}} [[Anna-Lena Grönefeld]] || 7–5, 7–6<sup>(7–2)</sup>
|-
| [[2005 Western & Southern Financial Group Women's Open – Doubles|2005]] || {{flagicon|USA}} [[Laura Granville]] <br /> {{flagicon|USA}} [[Abigail Spears]] || {{flagicon|CZE}} [[Květa Peschke]] <br /> {{flagicon|ARG}} [[María Emilia Salerni]] || 3–6, 6–2, 6–4
|-
| [[2006 Western & Southern Financial Group Women's Open – Doubles|2006]] || {{flagicon|ITA}} [[Maria Elena Camerin]] <br /> {{flagicon|ARG}} [[Gisela Dulko]] || {{flagicon|POL}} [[Marta Domachowska]] <br /> {{flagicon|IND}} [[Sania Mirza]] || 6–4, 3–6, 6–2
|-
| [[2007 Western & Southern Financial Group Women's Open – Doubles|2007]] || {{flagicon|USA}} [[Bethanie Mattek-Sands|Bethanie Mattek]] <br /> {{flagicon|IND}} [[Sania Mirza]] || {{flagicon|RUS}} [[Alina Jidkova]] <br /> {{flagicon|BLR|1995}} [[Tatiana Poutchek]] || 7–6<sup>(7–4)</sup>, 7–5
|-
| [[2008 Western & Southern Financial Group Women's Open – Doubles|2008]] || {{flagicon|RUS}} [[Maria Kirilenko]] <br /> {{flagicon|RUS}} [[Nadia Petrova]] || {{flagicon|TPE}} [[Hsieh Su-wei]] <br /> {{flagicon|RUS}} [[Yaroslava Shvedova]] || 6–3, 4–6, [10–8]
|-
| [[2009 Western & Southern Financial Group Women's Open – Doubles|2009]] || {{flagicon|ZIM}} [[Cara Black]] <br /> {{flagicon|USA}} [[Liezel Huber]] || {{flagicon|ESP}} [[Nuria Llagostera Vives]] <br /> {{flagicon|ESP}} [[María José Martínez Sánchez]] || 6–3, 0–6, [10–2]
|-
| [[2010 Western & Southern Financial Group Women's Open – Doubles|2010]] || {{flagicon|BLR|1995}} [[Victoria Azarenka]] <br /> {{flagicon|RUS}} [[Maria Kirilenko]] <small>(2)</small> || {{flagicon|USA}} [[Lisa Raymond]] <br /> {{flagicon|AUS}} [[Rennae Stubbs]] || 7–6<sup>(7–4)</sup>, 7–6<sup>(10–8)</sup>
|-
| [[2011 Western & Southern Open – Women's doubles|2011]] || {{flagicon|USA}} [[Vania King]] <br /> {{flagicon|KAZ}} [[Yaroslava Shvedova]] || {{flagicon|RSA}} [[Natalie Grandin]] <br /> {{flagicon|CZE}} [[Vladimíra Uhlířová]] || 6–4, 3–6, [11–9]
|-
| [[2012 Western & Southern Open – Women's doubles|2012]] || {{flagicon|CZE}} [[Andrea Hlaváčková]] <br /> {{flagicon|CZE}} [[Lucie Hradecká]] || {{flagicon|SLO}} [[Katarina Srebotnik]] <br /> {{flagicon|CHN}} [[Zheng Jie]] || 6–1, 6–3
|-
| [[2013 Western & Southern Open – Women's doubles|2013]] || {{flagicon|TPE}} [[Hsieh Su-wei]] <br /> {{flagicon|CHN}} [[Peng Shuai]] || {{flagicon|GER}} [[Anna-Lena Grönefeld]] <br /> {{flagicon|CZE}} [[Květa Peschke]] || 2–6, 6–3, [12–10]
|-
| [[2014 Western & Southern Open – Women's doubles|2014]] || {{flagicon|USA}} [[Raquel Kops-Jones]] <br /> {{flagicon|USA}} [[Abigail Spears]] <small> (2) </small>|| {{flagicon|HUN}} [[Tímea Babos]] <br /> {{flagicon|FRA}} [[Kristina Mladenovic]] || 6–1, 2–0 ret.
|-
| [[2015 Western & Southern Open – Women's doubles|2015]] || {{flagicon|TPE}} [[Chan Hao-ching]] <br /> {{flagicon|TPE}} [[Chan Yung-jan]] || {{flagicon|AUS}} [[Casey Dellacqua]] <br /> {{flagicon|KAZ}} [[Yaroslava Shvedova]] || 7–5, 6–4
|-
| [[2016 Western & Southern Open – Women's doubles|2016]] || {{flagicon|IND}} [[Sania Mirza]] <small>(2)</small> <br /> {{flagicon|CZE}} [[Barbora Strýcová]] || {{flagicon|SUI}} [[Martina Hingis]] <br /> {{flagicon|USA}} [[CoCo Vandeweghe]] || 7–5, 6–4
|-
| [[2017 Western & Southern Open – Women's doubles|2017]] || {{flagicon|TPE}} [[Chan Yung-jan]] <small>(2)</small> <br /> {{flagicon|SUI}} [[Martina Hingis]] || {{flagicon|TPE}} [[Hsieh Su-wei]] <br /> {{flagicon|ROU}} [[Monica Niculescu]] || 4–6, 6–4, [10–7]
|-
| [[2018 Western & Southern Open – Women's doubles|2018]] || {{flagicon|CZE}} [[Lucie Hradecká]] <small>(2)</small> <br /> {{flagicon|RUS}} [[Ekaterina Makarova]] || {{flagicon|BEL}} [[Elise Mertens]] <br /> {{flagicon|NED}} [[Demi Schuurs]] || 6–2, 7–5
|-
| [[2019 Western & Southern Open – Women's doubles|2019]] || {{flagicon|CZE}} [[Lucie Hradecká]] <small>(3)</small> <br /> {{flagicon|SLO}} [[Andreja Klepač]] || {{flagicon|GER}} [[Anna-Lena Grönefeld]] <br /> {{flagicon|NED}} [[Demi Schuurs]] || 6–4, 6–1
|-
| [[2020 Western & Southern Open – Women's doubles|2020]] || {{flagicon|CZE}} [[Květa Peschke]] <br /> {{flagicon|NED}} [[Demi Schuurs]] || {{flagicon|USA}} [[Nicole Melichar]] <br /> {{flagicon|CHN}} [[Xu Yifan]] || 6–1, 4–6, [10–4]
|-
| [[2021 Western & Southern Open – Women's doubles|2021]] || {{flagicon|AUS}} [[Samantha Stosur]] <br /> {{flagicon|CHN}} [[Zhang Shuai]]|| {{flagicon|CAN}} [[Gabriela Dabrowski]] <br /> {{flagicon|BRA}} [[Luisa Stefani]] || 7–5, 6–3
|-
| [[2022 Western & Southern Open – Women's doubles|2022]] || {{flagicon|UKR}} [[Lyudmyla Kichenok]] <br /> {{flagicon|LAT}} [[Jeļena Ostapenko]]|| {{flagicon|USA}} [[Nicole Melichar-Martinez]] <br /> {{flagicon|AUS}} [[Ellen Perez]] || 7–6<sup>(7–5)</sup>, 6–3
|-
| [[2023 Western & Southern Open – Women's doubles|2023]] || {{flagicon|USA}} [[Alycia Parks]] <br /> {{flagicon|USA}} [[Taylor Townsend]]|| {{flagicon|USA}} [[Nicole Melichar-Martinez]] <br /> {{flagicon|AUS}} [[Ellen Perez]] || 6–7<sup>(1–7)</sup>, 6–4, [10–6] 
|-
| [[2024 Cincinnati Open – Women's doubles|2024]] || {{flagicon|USA}} [[Asia Muhammad]] <br /> {{flagicon|NZL}} [[Erin Routliffe]]|| {{flagicon|CAN}} [[Leylah Fernandez]] <br /> {{flagicon|KAZ}} [[Yulia Putintseva]] || 3–6, 6–1, [10–4] 
|}

==Records==
===Men's singles===
[[Roger Federer]] has won the most Cincinnati Open titles, and out of eight finals, he possesses seven titles; his last being won in 2015, defeating future three-time champion [[Novak Djokovic]] in the final. It was at this tournament, in 2018, that Djokovic became the first player to win the [[Tennis Masters Series singles records and statistics|Golden Masters]] (winning all 9 masters). Djokovic then completed this again in 2020 for the double Golden Masters.

{|class=wikitable
|-
!style="text-align:left;"|Most titles
|{{flagicon|SUI}} [[Roger Federer]]
|style="text-align:center;"|7
|-
!rowspan=2 style="text-align:left;"|Most finals
|{{flagicon|SUI}} [[Roger Federer]]
|rowspan=2 style="text-align:center;"|8
|-
|{{flagicon|SRB}} [[Novak Djokovic]]
|-
! rowspan = 4 style="text-align:left;"|Most consecutive titles
<!-- FOR 3 YEARS OR LESS USE FORMAT ''(year_1, year_2, year_3)'' -->
<!-- FOR MORE THAN 3 YEARS USE FORMAT ''(year_1 - year_n)'' -->
|{{flagicon|USA}} [[Raymond D. Little]] <br> <small>{{center|''(1900, 1901, 1902)''}}</small>
| rowspan = 4 style="text-align:center;"|3
|-
|{{flagicon|USA}} [[Beals Wright]] <br> <small>{{center|''(1904, 1905, 1906)''}}</small>
|-
|{{flagicon|USA}} [[Robert LeRoy]] <br> <small>{{center|''(1907, 1908, 1909)''}}</small>
|-
|{{flagicon|USA}} [[Bobby Riggs]] <br> <small>{{center|''(1936, 1937, 1938)''}}</small>
|-
!style="text-align:left;"|Most consecutive finals
<!-- FOR 3 YEARS OR LESS USE FORMAT ''(year_1, year_2, year_3)'' -->
<!-- FOR MORE THAN 3 YEARS USE FORMAT ''(year_1 - year_n)'' -->
|{{flagicon|USA}} [[Bill Talbert]] <br> <small>{{center|''(1941–1945)''}}</small>
|style="text-align:center;"|5
|-
!style="text-align:left;"|Most matches played
|{{flagicon|SUI}} [[Roger Federer]] <br/>{{flagicon|SRB}} [[Novak Djokovic]]
| style="text-align:center;"|57
|-
!style="text-align:left;"|Most matches won
|{{flagicon|SUI}} [[Roger Federer]]
|style="text-align:center;"|47
|-
!style="text-align:left;"|Most consecutive matches won
|{{flagicon|USA}} [[Bobby Riggs]]
|style="text-align:center;"|21
|-
!style="text-align:left;"|Most editions played
|{{flagicon|SUI}} [[Roger Federer]]
|style="text-align:center;"|17
|-
!style="text-align:left;"|Most times seeded No. 1<br /><small>''(since 1927)''</small>
|{{flagicon|SUI}} [[Roger Federer]]
|style="text-align:center;"|7
|-
! rowspan = 2 style="text-align:left;"|Best winning %
|{{flagicon|USA}} [[Bryan Grant]]
| rowspan = 2 style="text-align:center;"|100%
|-
|{{flagicon|USA}} [[Bobby Riggs]]
|-
!style="text-align:left;"|Youngest champion
|{{flagicon|GER}} [[Boris Becker]]
|style="text-align:center;"|17y, 8m, 29d<br /><small>''([[1985 Cincinnati Open#Singles|1985]])''</small>
|-
!style="text-align:left;"|Oldest champion
|{{flagicon|SRB}} [[Novak Djokovic]]
|style="text-align:center;"|36y, 2m, 28d<br /><small>''([[2023 Cincinnati Open#Singles|2023]])''</small><ref>{{Cite web |date=21 August 2023 |title=Novak Djokovic Saves MP, Stuns Carlos Alcaraz For Cincinnati Title {{!}} ATP Tour {{!}} Tennis |url=https://www.atptour.com/en/news/alcaraz-djokovic-cincinnati-2023-final |url-status=live |archive-url=https://web.archive.org/web/20230821035644/https://www.atptour.com/en/news/alcaraz-djokovic-cincinnati-2023-final |archive-date=21 August 2023 |website=www.atptour.com}}</ref>

|}
{{5-set tennis
| match desc = 1948 (64 games)
| header text = Longest final
| player1 = {{flagicon|USA}} [[Herbert Behrens (tennis)|Herbert Behrens]]
| player2 = {{flagicon|USA}} [[Irvin Dorfman]]
| p1 s1 = '''7'''
| p2 s1 = 5
| p1 s2 = '''11'''
| p2 s2 = 9
| p1 s3 = 2
| p2 s3 = '''6'''
| p1 s4 = 6
| p2 s4 = '''8'''
| p1 s5 = '''6'''
| p2 s5 = 4
}}
{{5-set tennis
| match desc = [[2011 Western & Southern Open – Men's singles|2011]] (13 games)
| header text = Shortest final
| player1 = {{flagicon|GBR}} [[Andy Murray]]
| player2 = {{flagicon|SRB}} [[Novak Djokovic]]
| p1 s1 = '''6'''
| p2 s1 = 4
| p1 s2 = 3
| p2 s2 = 0<sup>r</sup>
}}

===Women's singles===
{|class=wikitable
|-
! rowspan = 2 style="text-align:left;"|Most titles
|{{flagicon|USA}} [[Ruth Sanders Cordes]]
| rowspan = 2 style="text-align:center;"|5
|-
|{{flagicon|USA}} [[Clara Louise Zinke]]
|-
! rowspan = 3 style="text-align:left;"|Most consecutive titles
<!-- FOR 3 YEARS OR LESS USE FORMAT ''(year_1, year_2, year_3)'' -->
<!-- FOR MORE THAN 3 YEARS USE FORMAT ''(year_1 - year_n)'' -->
|{{flagicon|USA}} [[May Sutton]] <br> <small>{{center|''(1905, 1906, 1907)''}}</small>
| rowspan = 3 style="text-align:center;"|3
|-
|{{flagicon|USA}} [[Ruth Sanders Cordes]] <br> <small>{{center|''(1920, 1922, 1923)''{{NoteTag|name=Cordes|Cordes' titles are considered consecutive since the 1921 edition was suspended.}}}}</small>
|-
|{{flagicon|USA}} [[Clara Louise Zinke]] <br> <small>{{center|''(1929, 1930, 1931)''}}</small>
|-
!style="text-align:left;"|Most consecutive finals
<!-- FOR 3 YEARS OR LESS USE FORMAT ''(year_1, year_2, year_3)'' -->
<!-- FOR MORE THAN 3 YEARS USE FORMAT ''(year_1 - year_n)'' -->
|{{flagicon|USA}} [[Clara Louise Zinke]] <br> <small>{{center|''(1923–1932)''}}</small>
|style="text-align:center;"|10
|-
!style="text-align:left;"|Most times seeded No. 1<br /><small>''(since 1927)''</small>
|{{flagicon|USA}} [[Pauline Betz]]
|style="text-align:center;"|4
|}
{{NoteFoot}}

===Men's doubles===
{|class=wikitable
|-
! rowspan = 3 style="text-align:left;"|Most titles
|{{flagicon|CAN}} [[Daniel Nestor]]
| rowspan = 3 style="text-align:center;"|5
|-
|{{flagicon|USA}} [[Bob Bryan]]
|-
|{{flagicon|USA}} [[Mike Bryan]]
|}

===Women's doubles===
{|class=wikitable
|-
!style="text-align:left;"|Most titles
|{{flagicon|USA}} [[Clara Louise Zinke]]
|style="text-align:center;"|6
|-
! rowspan = 2 style="text-align:left;"|Most consecutive titles
<!-- FOR MORE THAN 3 YEARS USE FORMAT ''(year_1 - year_n)'' -->
|{{flagicon|USA}} [[Martha Kinsey]] <!--INSERT EXACT YEARS HERE USING RELIABLE SOURCES <br> <small>{{center|''(,, )''}}</small>-->
| rowspan = 2 style="text-align:center;"|4
|-
|{{flagicon|USA}} [[Clara Louise Zinke]] <!--INSERT EXACT YEARS HERE USING RELIABLE SOURCES <br> <small>{{center|''(,, )''}}</small>-->
|}

===Overall records===
* Overall records include combined totals of singles and doubles events:
{|class=wikitable
|-
! !!colspan = 2 style="text-align:center;"|Men!!colspan = 2 style="text-align:center;"|Women
|-
!style="text-align:left;"|Most titles
|{{flagicon|USA}} [[Raymond D. Little]]
|style="text-align:center; width: 30px;"|11
|{{flagicon|USA}} [[Clara Louise Zinke]]
|style="text-align:center; width: 30px;"|12
|-
!style="text-align:left;"|Most finals
|{{flagicon|USA}} [[Bill Talbert]]
|style="text-align:center;"|14
|{{flagicon|USA}} [[Clara Louise Zinke]]
|style="text-align:center;"|18
|}

==References==
{{reflist}}

==External links==
{{commons category|Cincinnati Open}}
{{Portal|Tennis}}
* [http://www.cincytennis.com Official tournament website]
* [http://www.enquirer.com/atp/100/index.html The ''Cincinnati Enquirer''{{'}}s Special Section on the Tournament's 100th Anniversary (1999)]
* [http://www.enquirer.com/editions/1999/08/01/spt_ace_of_atp.html ''Cincinnati Enquirer'' Article on Paul Flory (1999)]
* [http://www.enquirer.com/editions/1999/08/01/spt_the_paul_flory_file.html Facts on Paul Flory from ''Cincinnati Enquirer'' Article (1999)]
* [http://www.enquirer.com/editions/2004/08/06/spt_sptten1ab.html ''Cincinnati Enquirer'' Article on The 25 Best Matches Of The Tournament's First 25 Years in Mason (August 6, 2004)]

{{Cincinnati Masters tournaments}}
{{ATP World Tour Masters 1000}}
{{WTA 1000 tournaments}}
{{navboxes|title=Previous men's tournament categories <small>(1981–1989)</small>
|list1=
{{Grand Prix Super Series tournaments}}
}}
{{US Open Series Tournaments}}
{{ATP Masters Series tournament winners}}
{{ATP Masters Series tournament doubles winners}}

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[[Category:Cincinnati Open| ]]
[[Category:Grand Prix tennis circuit]]
[[Category:Hard court tennis tournaments in the United States]]
[[Category:WTA 1000 tournaments|Cincinnati]]
[[Category:Sports competitions in Cincinnati]]
[[Category:Recurring sporting events established in 1899]]
[[Category:Tourist attractions in Warren County, Ohio]]
[[Category:US Open Series]]
[[Category:ATP Tour Masters 1000]]
[[Category:1899 establishments in Ohio]]
[[Category:Sports competitions in Mason, Ohio]]