# 2011 Mercury Insurance Open – Singles

Svetlana Kuznetsova was the defending champion, but withdrew due to a groin strain. Agnieszka Radwańska won the title, defeating Vera Zvonareva 6–3, 6–4 in the final.

## Seeds

The top eight seeds received a bye into the second round.
* Vera Zvonareva (final)
* Andrea Petkovic (semifinals)
* Agnieszka Radwańska (champion)
* Peng Shuai (quarterfinals)
* Ana Ivanovic (semifinals)
* Dominika Cibulková (withdrew due to a left abdominal muscle strain)
* Julia Görges (second round)
* Daniela Hantuchová (quarterfinals)
* Roberta Vinci (second round)
* Flavia Pennetta (first round)
* Maria Kirilenko (second round, withdrew due to a left hip injury)
* Sabine Lisicki (quarterfinals)
* Jarmila Gajdošová (first round)
* Elena Vesnina (first round)
* Sara Errani (third round)
* Polona Hercog (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

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| 1 | Vera Zvonareva | 6 | 3 | 6 | | | | | | | | | |
| 12 | Sabine Lisicki | 3 | 6 | 4 | | | | | | | | | |
| 12 | Sabine Lisicki | 3 | 6 | 4 | 1 | Vera Zvonareva | 5 | 6 | 6 | | | | |
| | | | | | 5 | Ana Ivanovic | 7 | 4 | 4 | | | | |
| 4 | Peng Shuai | 4 | 2 | | 5 | Ana Ivanovic | 7 | 4 | 4 | | | | |
| 5 | Ana Ivanovic | 6 | 6 | | | | | | | | | | |
| 5 | Ana Ivanovic | 6 | 6 | | | | | | | 1 | Vera Zvonareva | 3 | 4 |
| | | | | | | | | | | 3 | Agnieszka Radwańska | 6 | 6 |
| 8 | Daniela Hantuchová | 6 | 4 | 4 | | | | | | | | | | 3 | Agnieszka Radwańska | 6 | 6 |
| 3 | Agnieszka Radwańska | 0 | 6 | 6 | | | | | | | | | |
| 3 | Agnieszka Radwańska | 0 | 6 | 6 | 3 | Agnieszka Radwańska | 4 | 6 | 6 | | | | |
| | | | | | 2 | Andrea Petkovic | 6 | 0 | 4 | | | | |
| WC | Sloane Stephens | 2 | 1 | | 2 | Andrea Petkovic | 6 | 0 | 4 | | | | |
| 2 | Andrea Petkovic | 6 | 6 | | | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | V Zvonareva | 6 | 7 | | | | | | | | | | |
| Q | J Craybas | 6 | 6 | | Q | J Craybas | 4 | 5 | | | | | | | | | | |
| Q | M-È Pelletier | 1 | 1 | | | | | | | 1 | V Zvonareva | 6 | 6 | | | | | |
| | V Dushevina | 4 | 6 | 6 | | | | | | | V Dushevina | 3 | 0 | | | | | |
| WC | A Rezaï | 6 | 3 | 4 | | V Dushevina | 4 | 6 | 6 | | | | | | | | | |
| Q | N Grandin | 6$^1$ | 6 | 4 | 16 | P Hercog | 6 | 1 | 4 | | | | | | | | | |
| 16 | P Hercog | 7$^7$ | 2 | 6 | | | | | | | | | | 1 | V Zvonareva | 6 | 3 | 6 |
| 12 | S Lisicki | 6 | 6 | | | | | | | | | | | 12 | S Lisicki | 3 | 6 | 4 |
| Q | G Arn | 0 | 2 | | 12 | S Lisicki | 6 | 6 | | | | | | | | | | |
| | K Date-Krumm | 7 | 6 | | | K Date-Krumm | 1 | 2 | | | | | | | | | | |
| WC | G Dulko | 5 | 0 | | | | | | | 12 | S Lisicki | 6 | 6 | | | | | |
| | S Cîrstea | 5 | 7$^7$ | 3 | | | | | | | C Vandeweghe | 4 | 3 | | | | | |
| | C Vandeweghe | 7 | 6$^3$ | 6 | | C Vandeweghe | 6$^7$ | 6 | 6 | | | | | | | | | |
| | | | | | LL | O Savchuk | 7$^9$ | 4 | 3 | | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 4 | S Peng | 6 | 6 | | | | | | | | | | |
| | O Govortsova | 6$^4$ | 6 | 3 | | A Rodionova | 1 | 3 | | | | | | | | | | |
| | A Rodionova | 7$^7$ | 2 | 6 | | | | | | 4 | S Peng | 4 | 6 | 7$^9$ | | | | |
| | V King | 6 | 4 | 7 | | | | | | 15 | S Errani | 6 | 2 | 6$^7$ | | | | |
| Q | R Fujiwara | 1 | 6 | 5 | | V King | 3 | 2 | | | | | | | | | | |
| | S Mirza | 2 | 3 | | 15 | S Errani | 6 | 6 | | | | | | | | | | |
| 15 | S Errani | 6 | 6 | | | | | | | | | | | | 4 | S Peng | 4 | 2 |
| 10 | F Pennetta | 6 | 2 | 2 | | | | | | | | | | | 5 | A Ivanovic | 6 | 6 |
| | A Brianti | 1 | 6 | 6 | | A Brianti | 0 | 7$^7$ | 7$^9$ | | | | | | | | | |
| | S Arvidsson | 6 | 6 | | | S Arvidsson | 6 | 6$^5$ | 6$^7$ | | | | | | | | | |
| Q | A Weinhold | 3 | 1 | | | | | | | | A Brianti | 1 | 2 | | | | | |
| | A Morita | 6 | 4 | 7 | | | | | | 5 | A Ivanovic | 6 | 6 | | | | | |
| | J Dokić | 1 | 6 | 5 | | A Morita | 1 | 6$^5$ | | | | | | | | | | |
| | | | | | 5 | A Ivanovic | 6 | 7$^7$ | | | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 8 | D Hantuchová | 6 | 6 | | | | | | | | | | | |
| | C Scheepers | 4 | 6 | 5 | | B Záhlavová-Strýcová | 1 | 3 | | | | | | | | | | | |
| | B Záhlavová-Strýcová | 6 | 1 | 7 | | | | | | 8 | D Hantuchová | 6 | 4 | 6 | | | | | |
| | M Lučić | 7 | 2 | 6$^3$ | | | | | | | J Zheng | 2 | 6 | 4 | | | | | |
| | J Zheng | 5 | 6 | 7$^7$ | | J Zheng | 6 | 6 | | | | | | | | | | | |
| | B Jovanovski | 6 | 4 | 1 | 9 | R Vinci | 4 | 2 | | | | | | | | | | | |
| 9 | R Vinci | 3 | 6 | 6 | | | | | | | | | | | 8 | D Hantuchová | 6 | 4 | 4 |
| 13 | J Gajdošová | 3 | 2 | | | | | | | | | | | | 3 | A Radwańska | 0 | 6 | 6 |
| | A Kudryavtseva | 6 | 6 | | | A Kudryavtseva | 2 | 1 | r | | | | | | | | | | |
| Q | ZG Scandalis | 0 | 0 | | | C McHale | 6 | 3 | | | | | | | | | | | |
| | C McHale | 6 | 6 | | | | | | | | C McHale | 1 | 0 | | | | | | |
| | M Oudin | 0 | 1 | | | | | | | 3 | A Radwańska | 6 | 6 | | | | | | |
| | E Baltacha | 6 | 6 | | | E Baltacha | 0 | 6$^4$ | | | | | | | | | | | |
| | | | | | 3 | A Radwańska | 6 | 7$^7$ | | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 7 | J Görges | 3 | 5 | | | | | | | | | |
| | S Zhang | 4 | 2 | | WC | S Stephens | 6 | 7 | | | | | | | | | |
| WC | S Stephens | 6 | 6 | | | | | | WC | S Stephens | 5 | | | | | | |
| | T Paszek | 0 | 6 | 7 | | | | | | T Paszek | 3 | r | | | | | |
| | S Halep | 6 | 4 | 5 | | T Paszek | w/o | | | | | | | | | | |
| | R Marino | 3 | 2 | | 11 | M Kirilenko | | | | | | | | | | | |
| 11 | M Kirilenko | 6 | 6 | | | | | | | | | | | WC | S Stephens | 2 | 1 |
| 14 | E Vesnina | 1 | 2 | | | | | | | | | | | 2 | A Petkovic | 6 | 6 |
| Q | M Erakovic | 6 | 6 | | Q | M Erakovic | 1 | 3 | | | | | | | | | |
| | L Hradecká | 7$^9$ | 6$^5$ | 1 | | V Razzano | 6 | 6 | | | | | | | | | |
| | V Razzano | 6$^7$ | 7$^7$ | 6 | | | | | | V Razzano | 2 | 0 | r | | | | |
| | E Makarova | 1 | 2 | | | | | | 2 | A Petkovic | 6 | 3 | | | | | |
| WC | A Glatch | 6 | 6 | | WC | A Glatch | 3 | 4 | | | | | | | | | |
| | | | | | 2 | A Petkovic | 6 | 6 | | | | | | | | | |