# 2009 Concurso Internacional de Tenis – San Sebastián – Singles

Pablo Andújar tried to defend his 2008 title; however, he was eliminated by Pedro Clar-Rosselló in the quarterfinal. Thiemo de Bakker defeated Filip Krajinović 6–2, 6–3 in the final.

## Seeds

* Rubén Ramírez Hidalgo (second round)
* Santiago Ventura (second round)
* Pablo Andújar (quarterfinals)
* Lamine Ouahab (first round)
* Olivier Patience (semifinals)
* Thiemo de Bakker (champion)
* David Marrero (quarterfinals)
* Pablo Santos (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

### Final four

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| WC | Filip Krajinović | 6 | 3 | 6 | | | | |
| 5 | Olivier Patience | 2 | 6 | 3 | | | | |
| 5 | Olivier Patience | 2 | 6 | 3 | WC | Filip Krajinović | 2 | 3 |
| | | | | | 6 | Thiemo de Bakker | 6 | 6 |
| Q | Pedro Clar-Rosselló | 3 | 2 | | 6 | Thiemo de Bakker | 6 | 6 |
| 6 | Thiemo de Bakker | 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 Ramírez Hidalgo | 6 | 6 | | | | | | | | | | | | | | | | |
| Q | A Chadaj | 3 | 2 | | 1 | R Ramírez Hidalgo | 1 | 5 | | | | | | | | | | | |
| WC | J Eysseric | 4 | 6$^3$ | | WC | F Krajinović | 6 | 7 | | | | | | | | | | | |
| WC | F Krajinović | 6 | 7 | | | | | | | WC | F Krajinović | 0 | 6 | 6 | | | | | |
| | R Jouan | 4 | 2 | | | | | | | 7 | D Marrero | 6 | 1 | 3 | | | | | |
| | A Ghem | 6 | 6 | | | A Ghem | 6 | 0 | 2 | | | | | | | | | | |
| WC | A Vivanco-Guzmán | 3 | 5 | | 7 | D Marrero | 4 | 6 | 6 | | | | | | | | | | |
| 7 | D Marrero | 6 | 7 | | | | | | | | | | | | WC | F Krajinović | 6 | 3 | 6 |
| 4 | L Ouahab | 3 | 6 | 2 | | | | | | | | | | | 5 | O Patience | 2 | 6 | 3 |
| | A Ramos-Viñolas | 6 | 4 | 6 | | A Ramos-Viñolas | 2 | 6 | 6 | | | | | | | | | | |
| | I Belyaev | 4 | 6 | 1 | | F Vicente | 6 | 3 | 3 | | | | | | | | | | |
| | F Vicente | 6 | 4 | 6 | | | | | | | A Ramos-Viñolas | 4 | 0 | | | | | | |
| Q | J Genaro-Martínez | 7 | 6 | | | | | | | 5 | O Patience | 6 | 6 | | | | | | |
| | Á Kellner | 6$^2$ | 4 | | Q | J Genaro-Martínez | 1 | 2 | | | | | | | | | | | |
| | M Alund | 4 | 0 | | 5 | O Patience | 6 | 6 | | | | | | | | | | | |
| 5 | O Patience | 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 |
| 8 | P Santos | 4 | 7 | 3 | | | | | | | | | | | | | | |
| | G Olaso | 6 | 6$^5$ | 6 | | G Olaso | 6 | 3 | 5 | | | | | | | | | |
| | A Arnaboldi | 4 | 3 | | Q | P Clar-Rosselló | 4 | 6 | 7 | | | | | | | | | |
| Q | P Clar-Rosselló | 6 | 6 | | | | | | | Q | P Clar-Rosselló | 6 | 6$^7$ | 6 | | | | |
| Q | F del Bonis | 4 | 5 | | | | | | | 3 | P Andújar | 4 | 7 | 0 | | | | |
| | G Trujillo-Soler | 6 | 7 | | | G Trujillo-Soler | 6 | 1 | 2 | | | | | | | | | |
| | R Sluiter | 4 | 6 | 5 | 3 | P Andújar | 2 | 6 | 6 | | | | | | | | | |
| 3 | P Andújar | 6 | 4 | 7 | | | | | | | | | | | Q | P Clar-Rosselló | 3 | 2 |
| 6 | T de Bakker | 6 | 6 | | | | | | | | | | | | 6 | T de Bakker | 6 | 6 |
| | MÁ López Jaén | 4 | 2 | | 6 | T de Bakker | 6 | 6 | | | | | | | | | | |
| | R Bautista-Agut | 1 | 4 | | | B Pašanski | 4 | 4 | | | | | | | | | | |
| | B Pašanski | 6 | 6 | | | | | | | 6 | T de Bakker | 6$^4$ | 6 | 6 | | | | |
| | J Checa-Calvo | 6 | 6 | | | | | | | | J Checa-Calvo | 7 | 0 | 3 | | | | |
| WC | J Martí | 4 | 4 | | | J Checa-Calvo | 6 | 6 | | | | | | | | | | |
| | I Cervantes-Huegun | 2 | 6 | 3 | 2 | S Ventura | 4 | 3 | | | | | | | | | | |
| 2 | S Ventura | 6 | 4 | 6 | | | | | | | | | | | | | | |