2004 Hamburg Masters – Singles

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Roger Federer defeated the defending champion Guillermo Coria in the final, 4–6, 6–4, 6–2, 6–3 to win the singles tennis title at the 2004 Hamburg European Open.

Seeds

A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.

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Template:Flagicon Roger Federer (champion)
Template:Flagicon Guillermo Coria (final)
Template:Flagicon ~~Juan Carlos Ferrero~~ (withdrew because of a hand injury)
Template:Flagicon Rainer Schüttler (first round)
Template:Flagicon Tim Henman (second round)
Template:Flagicon David Nalbandian (first round)
Template:Flagicon Carlos Moyà (quarterfinals)
Template:Flagicon Sébastien Grosjean (first round)
Template:Flagicon Nicolas Massú (first round)
Template:Flagicon Mark Philippoussis (first round)
Template:Flagicon Paradorn Srichaphan (first round)
Template:Flagicon Martin Verkerk (first round)
Template:Flagicon Fernando González (third round)
Template:Flagicon Sjeng Schalken (first round, retired because of a leg injury)
Template:Flagicon Jiří Novák (first round)
Template:Flagicon Tommy Robredo (third round)
Template:Flagicon Lleyton Hewitt (semifinals)

Draw