# 2011 PTT Pattaya Open – Singles

Vera Zvonareva was the two-time defending champion, but lost to Daniela Hantuchová in the semifinals. Daniela Hantuchová won the title, defeating Sara Errani 6-0, 6-2 in the final.

## Seeds

* Vera Zvonareva (semifinals)
* Ana Ivanovic (quarterfinals)
* Maria Kirilenko (second round)
* Daniela Hantuchová (champion)
* Roberta Vinci (semifinals)
* Peng Shuai (quarterfinals)
* Zheng Jie (first round)
* Sara Errani (final)

## 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 | Vera Zvonareva | 6$^3$ | 4 | | | | |
| 4 | Daniela Hantuchová | 7 | 6 | | | | |
| 4 | Daniela Hantuchová | 7 | 6 | 4 | Daniela Hantuchová | 6 | 6 |
| | | | | 8 | Sara Errani | 0 | 2 |
| 8 | Sara Errani | 6 | 6 | 8 | Sara Errani | 0 | 2 |
| 5 | Roberta Vinci | 1 | 4 | | | | |

### Top half

| 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 | V Zvonareva | 6 | 6 | | | | | | | | | | | | | | |
| | T Paszek | 4 | 2 | 1 | V Zvonareva | 6 | 7 | | | | | | | | | | |
| Q | Z Diyas | 4 | 4 | Q | N Wannasuk | 1 | 5 | | | | | | | | | | |
| Q | N Wannasuk | 6 | 6 | | | | | | 1 | V Zvonareva | 6 | 4 | 6 | | | | |
| | E Baltacha | 6 | 6 | | | | | | 6 | S Peng | 4 | 6 | 4 | | | | |
| WC | N Lertpitaksinchai | 2 | 3 | | E Baltacha | 6 | 1 | 4 | | | | | | | | | |
| | Y-j Chan | 6$^8$ | 0 | 6 | S Peng | 2 | 6 | 6 | | | | | | | | | |
| 6 | S Peng | 7 | 6 | | | | | | | | | | | 1 | V Zvonareva | 6$^3$ | 4 |
| 4 | D Hantuchová | 6 | 6 | | | | | | | | | | | 4 | D Hantuchová | 7 | 6 |
| | K Nara | 2 | 1 | 4 | D Hantuchová | 7 | 6 | | | | | | | | | | |
| | K Date-Krumm | 6 | 6 | | K Date-Krumm | 6$^3$ | 3 | | | | | | | | | | |
| | R Voráčová | 2 | 2 | | | | | | 4 | D Hantuchová | 6 | 6 | | | | | |
| | T Malek | 6$^4$ | 2 | | | | | | | A Amanmuradova | 2 | 0 | | | | | |
| | C Scheepers | 7 | 6 | | C Scheepers | 2 | 4 | | | | | | | | | | |
| | A Amanmuradova | 6 | 7 | | A Amanmuradova | 6 | 6 | | | | | | | | | | |
| 7 | J Zheng | 4 | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 8 | S Errani | 4 | 6 | 6 | | | | | | | | | | | | | | |
| | K-c Chang | 6 | 2 | 4 | 8 | S Errani | 2 | 7 | 6 | | | | | | | | | |
| | T Tanasugarn | 3 | 2 | | | A Morita | 6 | 5 | 2 | | | | | | | | | |
| | A Morita | 6 | 6 | | | | | | | 8 | S Errani | 2 | 6 | 6 | | | | |
| | R Oprandi | 6 | 3 | 5 | | | | | | Q | G Voskoboeva | 6 | 3 | 2 | | | | |
| Q | G Voskoboeva | 4 | 6 | 7 | Q | G Voskoboeva | 1 | 7 | 6 | | | | | | | | | |
| | A Brianti | 0 | 6 | 2 | 3 | M Kirilenko | 6 | 5 | 4 | | | | | | | | | |
| 3 | M Kirilenko | 6 | 4 | 6 | | | | | | | | | | | 8 | S Errani | 6 | 6 |
| 5 | R Vinci | 6 | 6 | | | | | | | | | | | | 5 | R Vinci | 1 | 4 |
| Q | K Palkina | 1 | 3 | | 5 | R Vinci | 7 | 6 | | | | | | | | | | |
| | Z Kučová | 4 | 2 | | | S Zhang | 5 | 1 | | | | | | | | | | |
| | S Zhang | 6 | 6 | | | | | | | 5 | R Vinci | 7 | 6 | | | | | |
| WC | N Lertcheewakarn | 3 | 3 | | | | | | | 2 | A Ivanovic | 5 | 3 | | | | | |
| | J Craybas | 6 | 6 | | | J Craybas | 6 | 1 | 5 | | | | | | | | | |
| WC | N Luangnam | 0 | 2 | | 2 | A Ivanovic | 4 | 6 | 7 | | | | | | | | | |
| 2 | A Ivanovic | 6 | 6 | | | | | | | | | | | | | | | |