# 2011 Aircel Chennai Open – Singles

Marin Čilić was the two-time defending champion, but lost in the first round to Kei Nishikori. 3rd seed Stanislas Wawrinka defeated 7th seed Xavier Malisse 7–5, 4–6, 6–1 in the final match.

## Seeds

* Tomáš Berdych (semifinals)
* Marin Čilić (first round)
* Stanislas Wawrinka (champion)
* Richard Gasquet (second round)
* Jérémy Chardy (first round)
* Janko Tipsarević (semifinals)
* Xavier Malisse (final)
* Robin Haase (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 | Final | Final |
| 1 | Tomáš Berdych | 4 | 1 | | | | | | |
| 3/WC | Stanislas Wawrinka | 6 | 6 | | | | | | |
| 3/WC | Stanislas Wawrinka | 6 | 6 | | 3/WC | Stanislas Wawrinka | 7 | 4 | 6 |
| | | | | | 7 | Xavier Malisse | 5 | 6 | 1 |
| 7 | Xavier Malisse | 3 | 6 | 6 | 7 | Xavier Malisse | 5 | 6 | 1 |
| 6 | Janko Tipsarević | 6 | 3 | 2 | | | | | |

### 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 | T Berdych | 6 | 6 | | | | | | | | | | | | | | | |
| | F Gil | 0 | 1 | | 1 | T Berdych | 6 | 6 | | | | | | | | | | |
| | M Daniel | 2 | 2 | | | I Dodig | 2 | 4 | | | | | | | | | | |
| | I Dodig | 6 | 6 | | | | | | | 1 | T Berdych | 6 | 6 | | | | | |
| | D Gremelmayr | 6$^1$ | 4 | | | | | | | | B Kavčič | 3 | 3 | | | | | |
| | R Kendrick | 7$^7$ | 6 | | | R Kendrick | 2 | 2 | | | | | | | | | | |
| | B Kavčič | 6 | 6 | | | B Kavčič | 6 | 6 | | | | | | | | | | |
| 5 | J Chardy | 3 | 2 | | | | | | | | | | | | 1 | T Berdych | 4 | 1 |
| 3/WC | S Wawrinka | 6 | 6 | | | | | | | | | | | | 3/WC | S Wawrinka | 6 | 6 |
| WC | R Bopanna | 4 | 4 | | 3/WC | S Wawrinka | 7$^7$ | 7$^7$ | | | | | | | | | | |
| Q | D Goffin | 6 | 6 | | Q | D Goffin | 6$^3$ | 6$^3$ | | | | | | | | | | |
| | S Devvarman | 2 | 4 | | | | | | | 3/WC | S Wawrinka | 3 | 6 | 6 | | | | |
| | D Brown | 4 | 6 | 2 | | | | | | 8 | R Haase | 6 | 3 | 3 | | | | |
| Q | Y Sugita | 6 | 2 | 6 | Q | Y Sugita | 6 | 3 | 4 | | | | | | | | | |
| PR | F Dancevic | 7$^8$ | 4 | 4 | 8 | R Haase | 4 | 6 | 6 | | | | | | | | | |
| 8 | R Haase | 6$^6$ | 6 | 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 | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | X Malisse | 6 | 6 | | | | | | | | | | | | | | | |
| | M İlhan | 3 | 1 | | 7 | X Malisse | 6 | 6 | | | | | | | | | | |
| | S Robert | 6 | 6 | | | S Robert | 2 | 2 | | | | | | | | | | |
| | A Haider-Maurer | 4 | 4 | | | | | | | 7 | X Malisse | 6 | 6 | | | | | |
| | S Bolelli | 2 | 2 | | | | | | | | B Phau | 0 | 2 | | | | | |
| | B Phau | 6 | 6 | | | B Phau | 1 | 7$^7$ | 7$^7$ | | | | | | | | | |
| Q | É Roger-Vasselin | 1 | 3 | | 4 | R Gasquet | 6 | 6$^5$ | 6$^4$ | | | | | | | | | |
| 4 | R Gasquet | 6 | 6 | | | | | | | | | | | 7 | X Malisse | 3 | 6 | 6 |
| 6 | J Tipsarević | 6 | 6 | | | | | | | | | | | 6 | J Tipsarević | 6 | 3 | 2 |
| | E Schwank | 3 | 4 | | 6 | J Tipsarević | 6 | 7$^7$ | | | | | | | | | | |
| WC | Y Bhambri | 2 | 1 | | Q | A Kudryavtsev | 2 | 6$^3$ | | | | | | | | | | |
| Q | A Kudryavtsev | 6 | 6 | | | | | | | 6 | J Tipsarević | 6 | 6 | | | | | |
| | A Falla | 7 | 6 | | | | | | | | K Nishikori | 4 | 4 | | | | | |
| | R Machado | 5 | 3 | | | A Falla | 6 | 3 | 2 | | | | | | | | | |
| | K Nishikori | 4 | 7$^7$ | 6 | | K Nishikori | 4 | 6 | 6 | | | | | | | | | |
| 2 | M Čilić | 6 | 6$^0$ | 2 | | | | | | | | | | | | | | |