U.S. Men's Clay Court Championships 2004
Tommy Haas won the title, beating Andy Roddick 6–3 6–4 in the final.
Main draw 32 players
- 1🇺🇸Andy RoddickFinal · Lost to Tommy Haas
- 2🇺🇸Mardy FishRound of 32 · Lost to Alex Bogomolov Jr
- 3🇺🇸Taylor DentRound of 32 · Lost to Franco Squillari
- 4🇺🇸James BlakeQuarterfinals · Lost to Andrei Pavel
- 5🇷🇴Andrei PavelSemifinals · Lost to Tommy Haas
- 6🇺🇸Robby GinepriRound of 32 · Lost to Tommy Haas
- 7🇵🇪Luis HornaSemifinals · Lost to Andy Roddick
- 8🇦🇹Jurgen MelzerQuarterfinals · Lost to Andy Roddick
- 🇩🇪Tommy HaasFinal · Champion
- 🇷🇺Dmitry TursunovQuarterfinals · Lost to Tommy Haas
- WC🇺🇸Todd MartinQuarterfinals · Lost to Luis Horna
- 🇷🇺Alex Bogomolov JrRound of 16 · Lost to Dmitry Tursunov
- 🇮🇹Davide SanguinettiRound of 16 · Lost to James Blake
- 🇦🇷Franco SquillariRound of 16 · Lost to Todd Martin
- 🇦🇷Jose AcasusoRound of 16 · Lost to Andrei Pavel
- 🇺🇸Paul GoldsteinRound of 16 · Lost to Tommy Haas
- 🇺🇸Robert KendrickRound of 16 · Lost to Andy Roddick
- Q🇫🇷Stephane RobertRound of 16 · Lost to Luis Horna
- 🇩🇪Tomas BehrendRound of 16 · Lost to Jurgen Melzer
- Q🇦🇹Alexander PeyaRound of 32 · Lost to Davide Sanguinetti
- 🇩🇪Alexander PoppRound of 32 · Lost to Tomas Behrend
- WC🇺🇸Brian VahalyRound of 32 · Lost to Luis Horna
- Q🇦🇷Diego VeronelliRound of 32 · Lost to Jurgen Melzer
- 🇭🇷Ivo KarlovicRound of 32 · Lost to Dmitry Tursunov
- Q🇫🇷Jean Christophe FaurelRound of 32 · Lost to Stephane Robert
- 🇩🇰Kenneth CarlsenRound of 32 · Lost to Andy Roddick
- 🇩🇪Lars BurgsmullerRound of 32 · Lost to Jose Acasuso
- 🇦🇷Martin Vassallo ArguelloRound of 32 · Lost to Todd Martin
- 🇪🇨Nicolas LapenttiRound of 32 · Lost to Andrei Pavel
- LL🇫🇷Sebastien De ChaunacRound of 32 · Lost to Robert Kendrick
- 🇸🇪Thomas EnqvistRound of 32 · Lost to Paul Goldstein
- WC🇺🇸Wayne OdesnikRound of 32 · Lost to James Blake