Washington Open 2004
Lleyton Hewitt won the title, beating Gilles Muller 6–3 6–4 in the final.
Main draw 32 players
- 1🇺🇸Andre AgassiSemifinals · Lost to Gilles Muller
- 2🇦🇺Lleyton HewittFinal · Champion
- 3🇳🇱Sjeng SchalkenRound of 32 · Lost to Gilles Muller
- 4🇺🇸Robby GinepriSemifinals · Lost to Lleyton Hewitt
- 5🇺🇸James BlakeRound of 32 · Lost to Adrian Garcia
- 6🇪🇸Alberto Martin#364Round of 16 · Lost to Raemon Sluiter
- 7🇫🇷Cyril SaulnierQuarterfinals · Lost to Lleyton Hewitt
- 8🇷🇺Dmitry TursunovRound of 16 · Lost to Michel Kratochvil
- 🇱🇺Gilles MullerFinal · Lost to Lleyton Hewitt
- Q🇨🇭Michel KratochvilQuarterfinals · Lost to Gilles Muller
- 🇫🇷Paul Henri MathieuQuarterfinals · Lost to Andre Agassi
- 🇳🇱Raemon SluiterQuarterfinals · Lost to Robby Ginepri
- 🇨🇱Adrian GarciaRound of 16 · Lost to Paul Henri Mathieu
- 🇨🇴Alejandro FallaRound of 16 · Lost to Lleyton Hewitt
- 🇧🇪Gilles ElseneerRound of 16 · Lost to Cyril Saulnier
- Q🇮🇱Harel LevyRound of 16 · Lost to Robby Ginepri
- 🇺🇸Jan Michael GambillRound of 16 · Lost to Gilles Muller
- 🇩🇰Kristian PlessRound of 16 · Lost to Andre Agassi
- 🇪🇸Alex CorretjaRound of 32 · Lost to Robby Ginepri
- 🇫🇷Antony DupuisRound of 32 · Lost to Cyril Saulnier
- WC🇺🇸Brian BakerRound of 32 · Lost to Kristian Pless
- WC🇰🇷Daniel YooRound of 32 · Lost to Paul Henri Mathieu
- 🇺🇸Jeff SalzensteinRound of 32 · Lost to Michel Kratochvil
- Q🇹🇼Jimmy WangRound of 32 · Lost to Gilles Elseneer
- 🇺🇸Justin GimelstobRound of 32 · Lost to Alejandro Falla
- 🇩🇰Kenneth CarlsenRound of 32 · Lost to Lleyton Hewitt
- Q🇷🇸Nenad ZimonjicRound of 32 · Lost to Harel Levy
- 🇫🇷Olivier PatienceRound of 32 · Lost to Dmitry Tursunov
- WC🇺🇸Paul GoldsteinRound of 32 · Lost to Andre Agassi
- 🇦🇹Stefan KoubekRound of 32 · Lost to Jan Michael Gambill
- 🇺🇸Todd MartinRound of 32 · Lost to Raemon Sluiter
- 🇿🇦Wayne FerreiraRound of 32 · Lost to Alberto Martin