# 2011 Qatar Open – Singles

Nikolay Davydenko was the defending champion, but lost to Roger Federer 6–3, 6–4 in the final. Federer did not lose a single set in the entire tournament.

## Seeds

* Rafael Nadal (semifinals)
* Roger Federer (champion)
* Jo-Wilfried Tsonga (semifinals)
* Nikolay Davydenko (final)
* Ernests Gulbis (quarterfinals)
* Viktor Troicki (quarterfinals)
* Guillermo García-López (quarterfinals)
* Philipp Kohlschreiber (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 | Final | Final | Final | Final |
| 1 | Rafael Nadal | 3 | 2 | | | | |
| 4 | Nikolay Davydenko | 6 | 6 | | | | |
| 4 | Nikolay Davydenko | 6 | 6 | 4 | Nikolay Davydenko | 3 | 4 |
| | | | | 2 | Roger Federer | 6 | 6 |
| 3 | Jo-Wilfried Tsonga | 3 | 6$^2$ | 2 | Roger Federer | 6 | 6 |
| 2 | Roger Federer | 6 | 7$^7$ | | | | |

### 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 | R Nadal | 6 | 6 | | | | | | | | | | | | | | |
| | K Beck | 3 | 0 | | 1 | R Nadal | 7$^7$ | 0 | 6 | | | | | | | | |
| | L Lacko | 5 | 7$^9$ | 7$^7$ | | L Lacko | 6$^3$ | 6 | 3 | | | | | | | | |
| | P Riba | 7 | 6$^7$ | 6$^4$ | | | | | | 1 | R Nadal | 7$^7$ | 6 | | | | |
| Q | A Veić | 3 | 7 | 6 | | | | | | 5 | E Gulbis | 6$^3$ | 3 | | | | |
| WC | S Sabry | 6 | 5 | 0 | Q | A Veić | 3 | 1 | | | | | | | | | |
| | V Hănescu | 3 | 6$^6$ | | 5 | E Gulbis | 6 | 6 | | | | | | | | | |
| 5 | E Gulbis | 6 | 7$^8$ | | | | | | | | | | | 1 | R Nadal | 3 | 2 |
| 4 | N Davydenko | 6 | 6 | | | | | | | | | | | 4 | N Davydenko | 6 | 6 |
| | F Fognini | 1 | 4 | | 4 | N Davydenko | 6 | 7 | | | | | | | | | |
| | J Nieminen | 6 | 3 | 6 | | J Nieminen | 4 | 5 | | | | | | | | | |
| | M Przysiężny | 2 | 6 | 3 | | | | | | 4 | N Davydenko | 6 | 7 | | | | |
| | I Karlović | 7$^7$ | 7$^9$ | | | | | | | | I Karlović | 3 | 5 | | | | |
| Q | L Rosol | 6$^5$ | 6$^7$ | | | I Karlović | 7$^7$ | 6$^4$ | 7$^7$ | | | | | | | | |
| | A Seppi | 2 | 4 | | 8 | P Kohlschreiber | 6$^5$ | 7$^7$ | 6$^2$ | | | | | | | | |
| 8 | P Kohlschreiber | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | G García-López | 6 | 7$^7$ | | | | | | | | | | | | | |
| | M Kukushkin | 1 | 6$^1$ | | 7 | G García-López | 6 | 6 | | | | | | | | |
| | M Zverev | 6$^4$ | 4 | | | I Marchenko | 1 | 4 | | | | | | | | |
| | I Marchenko | 7$^7$ | 6 | | | | | | 7 | G García-López | 6$^4$ | 6$^9$ | | | | |
| WC | S Bubka | 6 | 6 | | | | | | 3 | J-W Tsonga | 7$^7$ | 7$^{11}$ | | | | |
| | D Gimeno-Traver | 0 | 3 | | WC | S Bubka | 2 | 4 | | | | | | | | |
| | R Ramírez Hidalgo | 2 | 0 | | 3 | J-W Tsonga | 6 | 6 | | | | | | | | |
| 3 | J-W Tsonga | 6 | 6 | | | | | | | | | | 3 | J-W Tsonga | 3 | 6$^2$ |
| 6 | V Troicki | 6 | 7 | | | | | | | | | | 2 | R Federer | 6 | 7$^7$ |
| | S Stakhovsky | 4 | 5 | | 6 | V Troicki | 6 | 6 | | | | | | | | |
| | R Schüttler | 4 | 6$^2$ | | | T Gabashvili | 3 | 1 | | | | | | | | |
| | T Gabashvili | 6 | 7$^7$ | | | | | | 6 | V Troicki | 2 | 2 | | | | |
| WC | R El Amrani | 6 | 6$^3$ | 3 | | | | | 2 | R Federer | 6 | 6 | | | | |
| Q | M Chiudinelli | 3 | 7$^7$ | 6 | Q | M Chiudinelli | 6$^5$ | 5 | | | | | | | | |
| Q | T Schoorel | 6$^3$ | 3 | | 2 | R Federer | 7$^7$ | 7 | | | | | | | | |
| 2 | R Federer | 7$^7$ | 6 | | | | | | | | | | | | | |