# 2004 Legg Mason Tennis Classic – Singles

Tim Henman was the defending champion but chose to participate in the 2004 Summer Olympics.
Lleyton Hewitt won in the final 6–3, 6–4 against Gilles Müller.

## Seeds

* Andre Agassi (semifinals)
* Lleyton Hewitt (champion)
* Sjeng Schalken (first round, retired due to virus)
* Robby Ginepri (semifinals)
* James Blake (first round)
* Alberto Martín (second round)
* Cyril Saulnier (quarterfinals)
* Dmitry Tursunov (second round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Andre Agassi | 4 | 5 | | | | |
| | Gilles Müller | 6 | 7 | | | | |
| | Gilles Müller | 6 | 7 | | Gilles Müller | 3 | 4 |
| | | | | 2 | Lleyton Hewitt | 6 | 6 |
| 4 | Robby Ginepri | 3 | 4 | 2 | Lleyton Hewitt | 6 | 6 |
| 2 | Lleyton Hewitt | 6 | 6 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | A Agassi | 6 | 6 | | | | | | | | | | | | | | | |
| WC | P Goldstein | 4 | 2 | | 1 | A Agassi | 6 | 6 | | | | | | | | | | |
| WC | B Baker | 3 | 6 | 6$^2$ | | K Pless | 4 | 2 | | | | | | | | | | |
| | K Pless | 6 | 3 | 7$^7$ | | | | | | 1 | A Agassi | 6 | 6 | | | | | |
| WC | D Yoo | 2 | 2 | | | | | | | | P-H Mathieu | 4 | 4 | | | | | |
| | P-H Mathieu | 6 | 6 | | | P-H Mathieu | 7$^7$ | 6 | | | | | | | | | | |
| SE | A García | 6 | 6 | | SE | A García | 6$^4$ | 4 | | | | | | | | | | |
| 5 | J Blake | 1 | 4 | | | | | | | | | | | | 1 | A Agassi | 4 | 5 |
| 3 | S Schalken | 1 | 1 | r | | | | | | | | | | | | G Müller | 6 | 7 |
| | G Müller | 6 | 0 | | | G Müller | 7 | 5 | 6 | | | | | | | | | |
| | J-M Gambill | 7 | 6 | | | J-M Gambill | 5 | 7 | 2 | | | | | | | | | |
| | S Koubek | 5 | 4 | | | | | | | | G Müller | 7 | 6$^7$ | 6 | | | | |
| | J Salzenstein | 4 | 6$^1$ | | | | | | | Q | M Kratochvil | 5 | 7$^9$ | 2 | | | | |
| Q | M Kratochvil | 6 | 7$^7$ | | Q | M Kratochvil | 7$^7$ | 7$^7$ | | | | | | | | | | |
| | O Patience | 7 | 4 | 4 | 8 | D Tursunov | 6$^5$ | 6$^4$ | | | | | | | | | | |
| 8 | D Tursunov | 5 | 6 | 6 | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | A Martín | 4 | 6 | 7$^7$ | | | | | | | | | | | | | | |
| | W Ferreira | 6 | 4 | 6$^2$ | 6 | A Martín | 6$^4$ | 7 | 6$^2$ | | | | | | | | | |
| | R Sluiter | 6$^5$ | 7$^7$ | 7$^7$ | | R Sluiter | 7$^7$ | 5 | 7$^7$ | | | | | | | | | |
| | T Martin | 7$^7$ | 6$^3$ | 6$^5$ | | | | | | | R Sluiter | 3 | 6$^3$ | | | | | |
| Q | N Zimonjić | 7$^9$ | 5 | 3 | | | | | | 4 | R Ginepri | 6 | 7$^7$ | | | | | |
| Q | H Levy | 6$^7$ | 7 | 6 | Q | H Levy | 6 | 2 | 1 | | | | | | | | | |
| | À Corretja | 6$^4$ | 6 | 3 | 4 | R Ginepri | 4 | 6 | 6 | | | | | | | | | |
| 4 | R Ginepri | 7$^7$ | 4 | 6 | | | | | | | | | | | 4 | R Ginepri | 3 | 4 |
| 7 | C Saulnier | 6 | 6 | | | | | | | | | | | | 2 | L Hewitt | 6 | 6 |
| | A Dupuis | 3 | 4 | | 7 | C Saulnier | 6 | 7$^7$ | | | | | | | | | | |
| Q | J Wang | 6 | 6$^1$ | 4 | | G Elseneer | 3 | 6$^2$ | | | | | | | | | | |
| | G Elseneer | 2 | 7$^7$ | 6 | | | | | | 7 | C Saulnier | 3 | 6 | 6$^5$ | | | | |
| | A Falla | 3 | 6 | 6 | | | | | | 2 | L Hewitt | 6 | 3 | 7$^7$ | | | | |
| | J Gimelstob | 6 | 4 | 3 | | A Falla | 3 | 2 | | | | | | | | | | |
| | K Carlsen | 1 | 2 | | 2 | L Hewitt | 6 | 6 | | | | | | | | | | |
| 2 | L Hewitt | 6 | 6 | | | | | | | | | | | | | | | |