# 2011 Erste Bank Open – Singles

Jürgen Melzer was the two-time defending champion, but lost to Kevin Anderson in the quarterfinals.
No.1 seed Jo-Wilfried Tsonga won the tournament beating No. 2 seed Juan Martín del Potro in the final, 6–7$^{(5–7)}$, 6–3, 6–4.

## Seeds

The top four seeds receive a bye into the second round.
* Jo-Wilfried Tsonga (champion)
* Juan Martín del Potro (final)
* Jürgen Melzer (quarterfinals)
* Radek Štěpánek (second round)
* Juan Ignacio Chela (first round)
* Kevin Anderson (semifinals)
* Nikolay Davydenko (first round)
* Fabio Fognini (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 | Final |
| 1 | Jo-Wilfried Tsonga | 6 | 7$^7$ | | | | | | |
| Q | Daniel Brands | 2 | 6$^4$ | | | | | | |
| Q | Daniel Brands | 2 | 6$^4$ | | 1 | Jo-Wilfried Tsonga | 6$^5$ | 6 | 6 |
| | | | | | 2 | Juan Martín del Potro | 7$^7$ | 3 | 4 |
| 6 | Kevin Anderson | 4 | 6 | 4 | 2 | Juan Martín del Potro | 7$^7$ | 3 | 4 |
| 2 | Juan Martín del Potro | 6 | 3 | 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 |
| | | | | | 1 | J-W Tsonga | 3 | 6 | 3 | | | | | | | | | |
| | R Haase | 6$^3$ | 4 | | | J Nieminen | 6 | 1 | 1$^r$ | | | | | | | | | |
| | J Nieminen | 7$^7$ | 6 | | | | | | | 1 | J-W Tsonga | 4 | 7$^7$ | 6 | | | | |
| | A Ramos | 1 | 4 | | | | | | | | X Malisse | 6 | 6$^4$ | 4 | | | | |
| | X Malisse | 6 | 6 | | | X Malisse | 6$^3$ | 6 | 6 | | | | | | | | | |
| | T Robredo | 6$^7$ | 7 | 1$^r$ | 8 | F Fognini | 7$^7$ | 3 | 3 | | | | | | | | | |
| 8 | F Fognini | 7$^9$ | 5 | 2 | | | | | | | | | | | 1 | J-W Tsonga | 6 | 7$^7$ |
| | | | | | | | | | | | | | | | Q | D Brands | 2 | 6$^4$ |
| | | | | | 4 | R Štěpánek | 4 | 6$^4$ | | | | | | | | | | |
| WC | M Fischer | 7$^7$ | 2 | 6$^6$ | Q | D Brands | 6 | 7$^7$ | | | | | | | | | | |
| Q | D Brands | 6$^3$ | 6 | 7$^8$ | | | | | | Q | D Brands | 6 | 6 | | | | | |
| WC | T Muster | 2 | 3 | | | | | | | Q | S Darcis | 3 | 4 | | | | | |
| WC | D Thiem | 6 | 6 | | WC | D Thiem | 2 | 2 | | | | | | | | | | |
| Q | S Darcis | 3 | 6 | 7$^7$ | Q | S Darcis | 6 | 6 | | | | | | | | | | |
| 7 | N Davydenko | 6 | 0 | 6$^2$ | | | | | | | | | | | | | | |

### 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 6 | K Anderson | 6 | 6 | | | | | | | | | | | | | | | |
| | A Haider-Maurer | 4 | 4 | | 6 | K Anderson | 6 | 7$^7$ | | | | | | | | | | |
| | R Sweeting | 4 | 2 | | | M Baghdatis | 2 | 6$^5$ | | | | | | | | | | |
| | M Baghdatis | 6 | 6 | | | | | | | 6 | K Anderson | 6 | 6 | | | | | |
| | G García López | 6 | 5 | 6 | | | | | | 3 | J Melzer | 3 | 3 | | | | | |
| | J Blake | 2 | 7 | 4 | | G García López | 5 | 1 | | | | | | | | | | |
| | | | | | 3 | J Melzer | 7 | 6 | | | | | | | | | | |
| | | | | | | | | | | | | | | 6 | K Anderson | 4 | 6 | 4 |
| 5 | JI Chela | 7$^7$ | 3 | 6$^5$ | | | | | | | | | | 2 | JM del Potro | 6 | 3 | 6 |
| Q | T Haas | 6$^3$ | 6 | 7$^7$ | Q | T Haas | 4 | 6 | 6 | | | | | | | | | |
| Q | A Bedene | 7$^7$ | | | Q | A Bedene | 6 | 4 | 1 | | | | | | | | | |
| | I Karlović | 6$^4$ | r | | | | | | | Q | T Haas | 2 | 4 | | | | | |
| | P Andújar | 2 | 2 | | | | | | | 2 | JM del Potro | 6 | 6 | | | | | |
| | P Petzschner | 6 | 6 | | | P Petzschner | 3 | 4 | | | | | | | | | | |
| | | | | | 2 | JM del Potro | 6 | 6 | | | | | | | | | | |