# 2011 Gerry Weber Open – Singles

Lleyton Hewitt was the defending champion, but lost to Philipp Kohlschreiber in the quarterfinals.
Kohlschreiber won the tournament, defeating Philipp Petzschner in an all-German final, the first in the tournament's history, after Petzschner retired in the second set at a score of 7–6, 2–0.

## Seeds

* Roger Federer (withdrew due to groin injury)
* Tomáš Berdych (semifinals)
* Gaël Monfils (semifinals)
* Mikhail Youzhny (withdrew due to left foot injury)
* Viktor Troicki (quarterfinals)
* Florian Mayer (quarterfinals)
* Alexandr Dolgopolov (second round)
* Milos Raonic (quarterfinals)

## 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 |
| | Philipp Kohlschreiber | 6 | 6 | | | | |
| 3 | Gaël Monfils | 3 | 3 | | | | |
| 3 | Gaël Monfils | 3 | 3 | | Philipp Kohlschreiber | 7$^7$ | 2 |
| | | | | | Philipp Petzschner | 6$^5$ | 0$^r$ |
| | Philipp Petzschner | 7$^9$ | 2 | 6 | Philipp Petzschner | 6$^5$ | 0$^r$ |
| 2 | Tomáš Berdych | 6$^7$ | 6 | 3 | | | |

### 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 |
| LL | L Mayer | 2 | 3 | | | | | | | | | | | | | | |
| | L Hewitt | 6 | 6 | | | L Hewitt | 6 | 6 | | | | | | | | | |
| | A Seppi | 6 | 6$^6$ | 6 | | A Seppi | 4 | 4 | | | | | | | | | |
| WC | T Haas | 2 | 7$^8$ | 3 | | | | | | | L Hewitt | 6$^4$ | 3 | | | | |
| | P Kohlschreiber | 6 | 3 | 6 | | | | | | | P Kohlschreiber | 7$^7$ | 6 | | | | |
| Q | C-M Stebe | 4 | 6 | 1 | | P Kohlschreiber | 6 | 7$^7$ | | | | | | | | | |
| | R Haase | 7$^7$ | 4 | 4 | 7 | A Dolgopolov | 3 | 6$^5$ | | | | | | | | | |
| 7 | A Dolgopolov | 6$^4$ | 6 | 6 | | | | | | | | | | | P Kohlschreiber | 6 | 6 |
| 3 | G Monfils | 6 | 6 | | | | | | | | | | | 3 | G Monfils | 3 | 3 |
| Q | F Serra | 4 | 3 | | 3 | G Monfils | 6 | 6 | | | | | | | | | |
| | P Riba | 6$^4$ | 6$^6$ | | | I Dodig | 2 | 3 | | | | | | | | | |
| | I Dodig | 7$^7$ | 7$^8$ | | | | | | | 3 | G Monfils | 6 | 6 | | | | |
| | J Nieminen | 6$^2$ | 3 | | | | | | | 6 | F Mayer | 4 | 4 | | | | |
| | Y-h Lu | 7$^7$ | 6 | | | Y-h Lu | 6$^4$ | 6 | 4 | | | | | | | | |
| WC | D Brown | 6$^6$ | 6 | 3 | 6 | F Mayer | 7$^7$ | 3 | 6 | | | | | | | | |
| 6 | F Mayer | 7$^8$ | 2 | 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 |
| 8 | M Raonic | 6 | 6 | | | | | | | | | | | | | | | |
| | P Andújar | 3 | 1 | | 8 | M Raonic | 7$^7$ | 6 | | | | | | | | | | |
| | T Kamke | 4 | | | | T Kamke | 6$^2$ | 3 | | | | | | | | | | |
| | J Reister | 3$^r$ | | | | | | | 8 | M Raonic | 3 | 7$^8$ | 3 | | | | | |
| | A Golubev | 6 | 6$^5$ | 2 | | | | | | P Petzschner | 6 | 6$^6$ | 6 | | | | | |
| | D Gimeno-Traver | 1 | 7$^7$ | 6 | | D Gimeno-Traver | 2 | 4 | | | | | | | | | | |
| | P Petzschner | 6 | 7$^7$ | | | P Petzschner | 6 | 6 | | | | | | | | | | |
| LL | D Meffert | 2 | 6$^5$ | | | | | | | | | | | | P Petzschner | 7$^9$ | 2 | 6 |
| 5 | V Troicki | 6 | 6 | | | | | | | | | | | 2 | T Berdych | 6$^7$ | 6 | 3 |
| WC | M Zverev | 2 | 3 | | 5 | V Troicki | 6 | 6 | | | | | | | | | | |
| | I Andreev | 6 | 6 | | | I Andreev | 3 | 1 | | | | | | | | | | |
| | P Starace | 4 | 4 | | | | | | 5 | V Troicki | 6$^3$ | 1 | | | | | | |
| | S Stakhovsky | 3 | 7$^7$ | 6$^8$ | | | | | 2 | T Berdych | 7$^7$ | 6 | | | | | | |
| Q | J Hernych | 6 | 6$^5$ | 7$^{10}$ | Q | J Hernych | 3 | 6$^7$ | | | | | | | | | | |
| Q | R Bemelmans | 7 | 6$^8$ | 4 | 2 | T Berdych | 6 | 7 | | | | | | | | | | |
| 2 | T Berdych | 5 | 7$^{10}$ | 6 | | | | | | | | | | | | | | |