|2003 Champion Andre Agassi|
Runner-up Andy Roddick
|Champion Tommy Haas|
Final score 6–3, 6–4
Andre Agassi was the defending champion but did not compete that year.
Tommy Haas won in the final 6–3, 6–4 against Andy Roddick.
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
References2004 U.S. Men's Clay Court Championships – Singles Wikipedia
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