# 2008 Estoril Open – Men's singles

Novak Djokovic was the defending champion, but chose not to participate that year.
First-seeded Roger Federer won in the final 7–6$^{(7–5)}$, 1–2, after Nikolay Davydenko retired due to a left leg injury.

## Seeds

* Roger Federer (champion)
* Nikolay Davydenko (final, retired due to a left leg injury)
* Ivo Karlović (first round, retired due to a right knee injury)
* Jarkko Nieminen (first round)
* Gilles Simon (second round, retired due to a back injury)
* Nicolas Mahut (first round)
* Marc Gicquel (quarterfinals)
* Michael Berrer (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 | Semifinals | Final | Final | Final | Final |
| 1 | Roger Federer | 2 | 7 | 6 | | | | |
| | Denis Gremelmayr | 6 | 5 | 1 | | | | |
| | Denis Gremelmayr | 6 | 5 | 1 | 1 | Roger Federer | 7$^7$ | 1 |
| | | | | | 2 | Nikolay Davydenko | 6$^5$ | 2$^r$ |
| | Florent Serra | 2 | 2 | | 2 | Nikolay Davydenko | 6$^5$ | 2$^r$ |
| 2 | Nikolay Davydenko | 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 | Semifinals |
| 1 | R Federer | 4 | 6 | 6 | | | | | | | | | | | | | | | |
| | O Rochus | 6 | 3 | 2 | 1 | R Federer | 6 | 6 | | | | | | | | | | | |
| | O Patience | 1 | 6$^2$ | | | V Hănescu | 3 | 2 | | | | | | | | | | | |
| | V Hănescu | 6 | 7$^7$ | | | | | | | 1 | R Federer | 6 | 6 | | | | | | |
| Q | O Marach | 1 | 3 | | | | | | | WC | F Gil | 4 | 1 | | | | | | |
| Q | J Sousa | 6 | 6 | | Q | J Sousa | 6$^5$ | 2 | | | | | | | | | | | |
| WC | F Gil | 6 | 6 | | WC | F Gil | 7$^7$ | 6 | | | | | | | | | | | |
| 6 | N Mahut | 0 | 3 | | | | | | | | | | | | 1 | R Federer | 2 | 7 | 6 |
| 4 | J Nieminen | 6 | 1 | 2 | | | | | | | | | | | | D Gremelmayr | 6 | 5 | 1 |
| | D Gremelmayr | 3 | 6 | 6 | | D Gremelmayr | 7$^8$ | 6 | | | | | | | | | | | |
| | F Mayer | 5 | 5 | | | T Gabashvili | 6$^6$ | 1 | | | | | | | | | | | |
| | T Gabashvili | 7 | 7 | | | | | | | | D Gremelmayr | 6 | 3 | 6 | | | | | |
| | J Vaněk | 4 | 6 | 6 | | | | | | | J Vaněk | 2 | 6 | 2 | | | | | |
| | P Petzschner | 6 | 3 | 4 | | J Vaněk | 6 | 3 | 7 | | | | | | | | | | |
| WC | G Elias | 4 | 5 | | 8 | M Berrer | 3 | 6 | 5 | | | | | | | | | | |
| 8 | M Berrer | 6 | 7 | | | | | | | | | | | | | | | | |

### 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 |
| 5 | G Simon | 7 | 7 | | | | | | | | | | | | | | | |
| | R Karanušić | 5 | 5 | | 5 | G Simon | 2 | 3$^r$ | | | | | | | | | | |
| | F Cipolla | 6 | 5 | 6 | | F Cipolla | 6 | 5 | | | | | | | | | | |
| | É Roger-Vasselin | 4 | 7 | 4 | | | | | | | F Cipolla | 1 | 1 | | | | | |
| Q | G Naso | 1 | 2 | | | | | | | | F Serra | 6 | 6 | | | | | |
| | F Serra | 6 | 6 | | | F Serra | 7$^7$ | 6 | | | | | | | | | | |
| WC | R Machado | 6 | 1 | | WC | R Machado | 6$^5$ | 1 | | | | | | | | | | |
| 3 | I Karlović | 4 | 0$^r$ | | | | | | | | | | | | | F Serra | 2 | 2 |
| 7 | M Gicquel | 6 | 6 | | | | | | | | | | | | 2 | N Davydenko | 6 | 6 |
| | B Pašanski | 4 | 3 | | 7 | M Gicquel | 7$^7$ | 6 | | | | | | | | | | |
| | T Ascione | 6 | 6 | | | T Ascione | 6$^2$ | 3 | | | | | | | | | | |
| Q | A Kudryavtsev | 1 | 4 | | | | | | | 7 | M Gicquel | 4 | 7 | 3 | | | | |
| | I Minář | 7 | 6 | | | | | | | 2 | N Davydenko | 6 | 5 | 6 | | | | |
| | M Vassallo Argüello | 5 | 1 | | | I Minář | 6 | 2 | 4 | | | | | | | | | |
| | J Melzer | 3 | 1 | | 2 | N Davydenko | 2 | 6 | 6 | | | | | | | | | |
| 2 | N Davydenko | 6 | 6 | | | | | | | | | | | | | | | |