2004 US Open – Men's singles

• Roger Federer (champion) • Andy Roddick (quarterfinals) • Carlos Moyà (third round) • Lleyton Hewitt (final) • Tim Henman (semifinals) • Andre Agassi (quarterfinals) • Juan Carlos Ferrero (second round) • David Nalbandian (second round) • Gastón Gaudio (second round) • Nicolás Massú (second round) • Rainer Schüttler (first round) • Sébastien Grosjean (second round) • Marat Safin (first round) • Fernando González (first round) • Paradorn Srichaphan (third round) • Andrei Pavel (fourth round, withdrew) • Juan Ignacio Chela (first round) • Tommy Robredo (fourth round) • Nicolas Kiefer (fourth round) • Gustavo Kuerten (first round) • Taylor Dent (second round) • Dominik Hrbatý (quarterfinals) • Vince Spadea (second round) • Ivan Ljubičić (first round) • Jiří Novák (third round) • Mardy Fish (second round) • Mario Ančić (first round) • Joachim Johansson (semifinals) • Guillermo Cañas (third round) • Feliciano López (third round) • Fabrice Santoro (third round) • Jonas Björkman (first round) ==Qualifying==