# 2011 San Marino CEPU Open – Singles

Robin Haase was the defending champion, but decided not to participate.
Potito Starace won the title. He played against Martin Kližan, but his opponent retired due to left foot injury, when the result was 6–1, 3–0.

## Seeds

* Potito Starace (champion)
* Lukáš Rosol (quarterfinals)
* Filippo Volandri (second round)
* Pere Riba (second round)
* Rui Machado (second round)
* Marc Gicquel (semifinals)
* Mischa Zverev (first round)
* Benoît Paire (semifinals)

## 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 | Potito Starace | 6 | 6 | | | | | |
| 8 | Benoît Paire | 2 | 4 | | | | | |
| 8 | Benoît Paire | 2 | 4 | | 1 | Potito Starace | 6 | 3 |
| | | | | | | Martin Kližan | 1 | 0$^r$ |
| | Martin Kližan | 3 | 6 | 7 | | Martin Kližan | 1 | 0$^r$ |
| 6 | Marc Gicquel | 6 | 4 | 5 | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | P Starace | 6 | 6 | | | | | | | | | | | | | | |
| | D Gremelmayr | 4 | 1 | | 1 | P Starace | 7 | 6 | | | | | | | | | |
| WC | A di Mauro | 4 | 6 | 6$^2$ | | J Huta Galung | 5 | 3 | | | | | | | | | |
| | J Huta Galung | 6 | 4 | 7$^7$ | | | | | | 1 | P Starace | 6 | 6 | | | | |
| | J Hájek | 7$^7$ | 6 | | | | | | | | J Hájek | 4 | 3 | | | | |
| | D Guez | 6$^4$ | 3 | | | J Hájek | 6 | 7 | | | | | | | | | |
| | S Darcis | 7$^7$ | 6 | | | S Darcis | 1 | 5 | | | | | | | | | |
| 7 | M Zverev | 6$^3$ | 1 | | | | | | | | | | | 1 | P Starace | 6 | 6 |
| 4 | P Riba | 3 | 6 | 6 | | | | | | | | | | 8 | B Paire | 2 | 4 |
| WC | M Trevisan | 6 | 3 | 2 | 4 | P Riba | 1 | 2 | | | | | | | | | |
| Q | M Authom | 5 | 6 | 3 | SE | L Mayer | 6 | 6 | | | | | | | | | |
| SE | L Mayer | 7 | 1 | 6 | | | | | | SE | L Mayer | 4 | 3 | | | | |
| | U Ignatik | 6$^3$ | 3 | | | | | | | 8 | B Paire | 6 | 6 | | | | |
| | N Ćirić | 7$^7$ | 6 | | | N Ćirić | 7$^7$ | 4 | 4 | | | | | | | | |
| | S Bolelli | 7$^7$ | 5 | 2 | 8 | B Paire | 6$^0$ | 6 | 6 | | | | | | | | |
| 8 | B Paire | 6$^5$ | 7 | 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 | Semifinals |
| 5 | R Machado | 6 | 6 | | | | | | | | | | | | | | | | |
| | A Ungur | 1 | 2 | | 5 | R Machado | 6 | 4 | 6$^1$ | | | | | | | | | | |
| Q | J Sousa | 2 | 4 | | | M Kližan | 3 | 6 | 7$^7$ | | | | | | | | | | |
| | M Kližan | 6 | 6 | | | | | | | | M Kližan | 6 | 0 | | | | | | |
| | B Phau | 6 | 7 | | | | | | | | B Phau | 3 | 0$^r$ | | | | | | |
| | P Lorenzi | 3 | 5 | | | B Phau | 6 | 6 | | | | | | | | | | | |
| Q | D Giorgini | 1 | 2 | | 3 | F Volandri | 2 | 2 | | | | | | | | | | | |
| 3 | F Volandri | 6 | 6 | | | | | | | | | | | | | M Kližan | 3 | 6 | 7 |
| 6 | M Gicquel | 6 | 1 | 7 | | | | | | | | | | | 6 | M Gicquel | 6 | 4 | 5 |
| WC | S Galvani | 1 | 6 | 5 | 6 | M Gicquel | 6 | 7 | | | | | | | | | | | |
| Q | B Balleret | 4 | 7 | 6 | Q | B Balleret | 2 | 5 | | | | | | | | | | | |
| WC | T Muster | 6 | 5 | 2 | | | | | | 6 | M Gicquel | 3 | 6 | 6 | | | | | |
| SE | Grégoire Burquier | 2 | 6 | 3 | | | | | | 2 | L Rosol | 6 | 3 | 4 | | | | | |
| | D Brown | 6 | 3 | 6 | | D Brown | 1 | 6 | 3 | | | | | | | | | | |
| | I Minář | 5 | 3 | | 2 | L Rosol | 6 | 3 | 6 | | | | | | | | | | |
| 2 | L Rosol | 7 | 6 | | | | | | | | | | | | | | | | |