# 2008 Legg Mason Tennis Classic – Singles

Andy Roddick was the defending champion, but lost in the quarterfinals to Viktor Troicki.
Juan Martín del Potro won in the final 6–3, 6–3, against Viktor Troicki.

## Seeds

* Andy Roddick (quarterfinals)
* Juan Martín del Potro (champion)
* Feliciano López (first round)
* Tommy Haas (semifinals)
* Mardy Fish (first round)
* Marat Safin (first round, retired due to a neck pain)
* Marc Gicquel (first round)
* Marcel Granollers (first 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 |
| | Viktor Troicki | 6 | 6 | | | | |
| | Igor Kunitsyn | 4 | 2 | | | | |
| | Igor Kunitsyn | 4 | 2 | | Viktor Troicki | 3 | 3 |
| | | | | 2 | Juan Martín del Potro | 6 | 6 |
| 4 | Tommy Haas | 2 | 1 | 2 | Juan Martín del Potro | 6 | 6 |
| 2 | Juan Martín del Potro | 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 |
| 1 | A Roddick | 6 | 7$^7$ | | | | | | | | | | | | | | |
| Q | R Delgado | 3 | 6$^4$ | | 1 | A Roddick | 4 | 6 | 7$^7$ | | | | | | | | |
| | S Grosjean | 3 | 6 | 3 | | E Schwank | 6 | 4 | 6$^2$ | | | | | | | | |
| | E Schwank | 6 | 4 | 6 | | | | | | 1 | A Roddick | 6 | 2 | 4 | | | |
| | V Troicki | 6 | 6 | | | | | | | | V Troicki | 0 | 6 | 6 | | | |
| | D Gremelmayr | 4 | 2 | | | V Troicki | 6 | 1 | 6 | | | | | | | | |
| | B Reynolds | 7$^7$ | 3 | 6 | | B Reynolds | 4 | 6 | 4 | | | | | | | | |
| 7 | M Gicquel | 6$^2$ | 6 | 4 | | | | | | | | | | | V Troicki | 6 | 6 |
| 3 | F López | 3 | 5 | | | | | | | | | | | | I Kunitsyn | 4 | 2 |
| Q | R Kendrick | 6 | 7 | | Q | R Kendrick | 2 | 7$^7$ | 5 | | | | | | | | |
| WC | T Dent | 6$^3$ | 6 | 1 | Q | S Devvarman | 6 | 6$^5$ | 7 | | | | | | | | |
| Q | S Devvarman | 7$^7$ | 2 | 6 | | | | | | Q | S Devvarman | 4 | 1 | | | | |
| | I Kunitsyn | 6$^8$ | 6 | 6 | | | | | | | I Kunitsyn | 6 | 6 | | | | |
| | M Zverev | 7$^{10}$ | 4 | 2 | | I Kunitsyn | 2 | 6 | 7$^8$ | | | | | | | | |
| | F Fognini | 7 | | | | F Fognini | 6 | 2 | 6$^6$ | | | | | | | | |
| 6 | M Safin | 5 | r | | | | | | | | | | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | M Fish | 7 | 4 | 2 | | | | | | | | | | | | | |
| | A Falla | 5 | 6 | 6 | | A Falla | 7$^7$ | 7$^{13}$ | | | | | | | | | |
| | F Serra | 7$^7$ | 6 | | | F Serra | 6$^2$ | 6$^{11}$ | | | | | | | | | |
| WC | U Ignatik | 6$^3$ | 3 | | | | | | | | A Falla | 5 | 1 | | | | |
| | W Odesnik | 6 | 4 | 4 | | | | | | 4 | T Haas | 7 | 6 | | | | |
| | N Mahut | 4 | 6 | 6 | | N Mahut | 6$^4$ | 3 | | | | | | | | | |
| Q | R de Voest | 4 | 6 | 1 | 4 | T Haas | 7$^7$ | 6 | | | | | | | | | |
| 4 | T Haas | 6 | 4 | 6 | | | | | | | | | | 4 | T Haas | 2 | 1 |
| 8 | M Granollers | 3 | 7$^7$ | 6$^1$ | | | | | | | | | | 2 | JM del Potro | 6 | 6 |
| | J Isner | 6 | 6$^5$ | 7$^7$ | | J Isner | 6 | 7$^7$ | | | | | | | | | |
| | D Young | 6 | 6 | | | D Young | 4 | 6$^4$ | | | | | | | | | |
| | L Horna | 3 | 1 | | | | | | | | J Isner | 4 | 4 | | | | |
| | D Sela | 7$^8$ | 6 | | | | | | | 2 | JM del Potro | 6 | 6 | | | | |
| | V Spadea | 6$^6$ | 3 | | | D Sela | 0 | 7 | 2 | | | | | | | | |
| WC | J Levine | 2 | 3 | | 2 | JM del Potro | 6 | 5 | 6 | | | | | | | | |
| 2 | JM del Potro | 6 | 6 | | | | | | | | | | | | | | |