# 2011 Rai Open – Singles

Filippo Volandri was the defending champion but decided not to participate. Thomas Schoorel won the title, defeating Martin Kližan 7–5, 1–6, 6–3 in the final.

## Seeds

* Andreas Haider-Maurer (quarterfinals)
* Björn Phau (first round)
* Marsel İlhan (quarterfinals)
* Andreas Beck (semifinals)
* Julian Reister (quarterfinals, withdrew due to left foot injury)
* Ivo Minář (semifinals)
* Simon Greul (first round)
* Martin Fischer (withdrew)

## 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 |
| | Martin Kližan | 3 | 6 | 6 | | | | |
| 6 | Ivo Minář | 6 | 4 | 2 | | | | |
| 6 | Ivo Minář | 6 | 4 | 2 | Martin Kližan | 5 | 6 | 3 |
| | | | | | Thomas Schoorel | 7 | 1 | 6 |
| 4 | Andreas Beck | 6$^6$ | 7 | 2 | Thomas Schoorel | 7 | 1 | 6 |
| | Thomas Schoorel | 7 | 6$^5$ | 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | A Haider-Maurer | 6 | 2 | 6 | | | | | | | | | | | | | | |
| | U Ignatik | 3 | 6 | 4 | 1 | A Haider-Maurer | 7 | 6 | | | | | | | | | | |
| | I Klec | 7 | 4 | 6 | | I Klec | 5 | 3 | | | | | | | | | | |
| | D Muñoz-De La Nava | 6$^3$ | 6 | 3 | | | | | | 1 | A Haider-Maurer | 2 | 6$^5$ | | | | | |
| | B Knittel | 3 | 2 | | | | | | | | M Kližan | 6 | 7 | | | | | |
| | A Gensse | 6 | 6 | | | A Gensse | 6 | 3 | 3 | | | | | | | | | |
| | M Kližan | 4 | 6 | 6 | | M Kližan | 3 | 6 | 6 | | | | | | | | | |
| 7 | S Greul | 6 | 2 | 0 | | | | | | | | | | | M Kližan | 3 | 6 | 6 |
| 3 | M İlhan | 6 | 7 | | | | | | | | | | | 6 | I Minář | 6 | 4 | 2 |
| | P Polansky | 3 | 5 | | 3 | M İlhan | 2 | 6 | 6 | | | | | | | | | |
| | I Navarro | 4 | 4 | | | G Olaso | 6 | 1 | 3 | | | | | | | | | |
| | G Olaso | 6 | 6 | | | | | | | 3 | M İlhan | 3 | 4 | | | | | |
| WC | A Giannessi | 2 | 6$^3$ | | | | | | | 6 | I Minář | 6 | 6 | | | | | |
| | A Ungur | 6 | 7 | | | A Ungur | 3 | 2 | | | | | | | | | | |
| WC | G Naso | 2 | 3 | | 6 | I Minář | 6 | 6 | | | | | | | | | | |
| 6 | I Minář | 6 | 6 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | J Reister | 6 | 7 | | | | | | | | | | | | | | | |
| | V Crivoi | 3 | 6$^5$ | | 5 | J Reister | 6 | 6 | | | | | | | | | | |
| | S Darcis | 6$^2$ | 2 | | Q | P Červenák | 3 | 4 | | | | | | | | | | |
| Q | P Červenák | 7 | 6 | | | | | | 5 | J Reister | | | | | | | | |
| WC | T Fabbiano | 6 | 7 | | | | | | 4 | A Beck | w/o | | | | | | | |
| | N Ćirić | 3 | 6$^4$ | | WC | T Fabbiano | 2 | 1 | | | | | | | | | | |
| | A Veić | 6 | 4 | 4 | 4 | A Beck | 6 | 6 | | | | | | | | | | |
| 4 | A Beck | 3 | 6 | 6 | | | | | | | | | | 5 | A Beck | 6$^6$ | 7 | 2 |
| LL | N Mektić | 4 | 6$^6$ | | | | | | | | | | | | T Schoorel | 7 | 6$^5$ | 6 |
| | E Donskoy | 6 | 7 | | | E Donskoy | 6$^7$ | 4 | | | | | | | | | | |
| WC | T Muster | 0 | 3 | | Q | C-M Stebe | 7 | 6 | | | | | | | | | | |
| Q | C-M Stebe | 6 | 6 | | | | | | Q | C-M Stebe | 6 | 6$^4$ | 4 | | | | | |
| Q | P Carreño-Busta | 6 | 3 | 6$^6$ | | | | | | T Schoorel | 2 | 7 | 6 | | | | | |
| | T Schoorel | 3 | 6 | 7 | | T Schoorel | 3 | 5 | | | | | | | | | | |
| Q | B Pašanski | 6 | 6 | | Q | B Pašanski | 6 | 4$^r$ | | | | | | | | | | |
| 2 | B Phau | 4 | 4 | | | | | | | | | | | | | | | |