# 2011 Rogers Cup – Women's singles

Serena Williams defeated Samantha Stosur in the final, 6–4, 6–2 to win the women's singles tennis title at the 2011 Canadian Open. It was her second Canadian Open title.
Caroline Wozniacki was the defending champion, but lost to Roberta Vinci in the second round.

## Seeds

The top eight seeds receive a bye into the second round.
* Caroline Wozniacki (second round)
* Kim Clijsters (second round, retired because of an abdominal injury)
* Vera Zvonareva (third round)
* Victoria Azarenka (semifinals)
* Maria Sharapova (third round)
* Li Na (third round)
* Petra Kvitová (third round)
* Francesca Schiavone (third round)
* Marion Bartoli (first round)
* Samantha Stosur (final)
* Andrea Petkovic (quarterfinals)
* Svetlana Kuznetsova (first round)
* Agnieszka Radwańska (semifinals)
* Anastasia Pavlyuchenkova (first round)
* Jelena Janković (first round)
* Dominika Cibulková (first round, retired because of a left abdominal strain)

## Main 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 |
| | Roberta Vinci | 4 | 1 | | | | | | | | | | |
| 10 | Samantha Stosur | 6 | 6 | | | | | | | | | | |
| 10 | Samantha Stosur | 6 | 6 | | 10 | Samantha Stosur | 6 | 5 | 6 | | | | |
| | | | | | 13 | Agnieszka Radwańska | 2 | 7 | 2 | | | | |
| 13 | Agnieszka Radwańska | 6 | 6 | | 13 | Agnieszka Radwańska | 2 | 7 | 2 | | | | |
| 11 | Andrea Petkovic | 4 | 3 | | | | | | | | | | |
| 11 | Andrea Petkovic | 4 | 3 | | | | | | | 10 | Samantha Stosur | 4 | 2 |
| | | | | | | | | | | | Serena Williams | 6 | 6 |
| Q | Galina Voskoboeva | 1 | 2 | | | | | | | | | | | Serena Williams | 6 | 6 |
| 4 | Victoria Azarenka | 6 | 6 | | | | | | | | | | |
| 4 | Victoria Azarenka | 6 | 6 | | 4 | Victoria Azarenka | 3 | 3 | | | | | |
| | | | | | | Serena Williams | 6 | 6 | | | | | |
| | Lucie Šafářová | 6 | 3 | 2 | | Serena Williams | 6 | 6 | | | | | |
| | Serena Williams | 4 | 6 | 6 | | | | | | | | | |

### Top half
#### Section 1

| 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 1 | C Wozniacki | 4 | 5 | | | | | | | | |
| | Y Wickmayer | 4 | 2 | | | R Vinci | 6 | 7 | | | | | | | | |
| | R Vinci | 6 | 6 | | | | | | | R Vinci | 7$^7$ | 6 | | | | |
| Q | S Zhang | 1 | 1 | | | | | | | A Ivanovic | 6$^3$ | 2 | | | | |
| | A Ivanovic | 6 | 6 | | | A Ivanovic | 6 | 6 | | | | | | | | |
| Q | I Benešová | 7 | 4 | 1 | Q | I Benešová | 3 | 2 | | | | | | | | |
| 16 | D Cibulková | 5 | 6 | 3$^r$ | | | | | | | | | | R Vinci | 4 | 1 |
| 10 | S Stosur | 4 | 6 | 6 | | | | | | | | | 10 | S Stosur | 6 | 6 |
| | A Morita | 6 | 2 | 3 | 10 | S Stosur | 6 | 6 | | | | | | | | |
| WC | A Wozniak | 6 | 6 | | WC | A Wozniak | 3 | 4 | | | | | | | | |
| | S Pe'er | 1 | 0 | | | | | | 10 | S Stosur | 6 | 6 | | | | |
| | S Peng | 6 | 7 | | | | | | 6 | N Li | 2 | 4 | | | | |
| LL | L Domínguez Lino | 1 | 5 | | | S Peng | | | | | | | | | | |
| | | | | | 6 | N Li | w/o | | | | | | | | | |

#### Section 2

| 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 3 | V Zvonareva | 7 | 6 | | | | | | | | |
| | J Gajdošová | 1 | 2 | | | N Petrova | 5 | 4 | | | | | | | | |
| | N Petrova | 6 | 6 | | | | | | 3 | V Zvonareva | 4 | 6$^4$ | | | | |
| Q | P Martić | 1 | 6 | 6 | | | | | 13 | A Radwańska | 6 | 7$^7$ | | | | |
| | L Hradecká | 6 | 4 | 4 | Q | P Martić | 3 | 3 | | | | | | | | |
| | E Vesnina | 4 | 1 | | 13 | A Radwańska | 6 | 6 | | | | | | | | |
| 13 | A Radwańska | 6 | 6 | | | | | | | | | | 13 | A Radwańska | 6 | 6 |
| 11 | A Petkovic | 6 | 6 | | | | | | | | | | 11 | A Petkovic | 4 | 3 |
| WC | E Bouchard | 2 | 2 | | 11 | A Petkovic | 6 | 7 | | | | | | | | |
| | K Zakopalová | 3 | 1 | | Q | G Arn | 4 | 5 | | | | | | | | |
| Q | G Arn | 6 | 6 | | | | | | 11 | A Petkovic | 6 | 6 | | | | |
| | A Medina Garrigues | 7 | 6 | | | | | | 7 | P Kvitová | 1 | 2 | | | | |
| | S Errani | 5 | 1 | | | A Medina Garrigues | 6$^3$ | 3 | | | | | | | | |
| | | | | | 7 | P Kvitová | 7$^7$ | 6 | | | | | | | | |

### 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 5 | M Sharapova | 6 | 7 | | | | | | | | | |
| Q | B Jovanovski | 2 | | | Q | B Jovanovski | 1 | 5 | | | | | | | | | |
| | J Dokić | 0 | r | | | | | | | 5 | M Sharapova | 3 | 5 | | | | |
| | F Pennetta | 6 | 6 | | | | | | | Q | G Voskoboeva | 6 | 7 | | | | |
| | M Kirilenko | 3 | 1 | | | F Pennetta | 6 | 3 | 2 | | | | | | | | |
| Q | G Voskoboeva | 6 | 6 | | Q | G Voskoboeva | 2 | 6 | 6 | | | | | | | | |
| 9 | M Bartoli | 3 | 3 | | | | | | | | | | | Q | G Voskoboeva | 1 | 2 |
| 14 | A Pavlyuchenkova | 6 | 4 | 1 | | | | | | | | | | 4 | V Azarenka | 6 | 6 |
| Q | MJ Martínez Sánchez | 3 | 6 | 6 | Q | MJ Martínez Sánchez | 7 | 6 | | | | | | | | | |
| | D Hantuchová | 6 | 6 | | | D Hantuchová | 5 | 2 | | | | | | | | | |
| | G Dulko | 3 | 4 | | | | | | | Q | MJ Martínez Sánchez | 1 | 2 | | | | |
| WC | S Dubois | 7$^7$ | 6 | | | | | | | 4 | V Azarenka | 6 | 6 | | | | |
| Q | K Wörle | 6$^4$ | 1 | | WC | S Dubois | 0 | 0 | | | | | | | | | |
| | | | | | 4 | V Azarenka | 6 | 6 | | | | | | | | | |

#### 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 |
| | | | | | 8 | F Schiavone | 6 | 6 | | | | | | | | | |
| | E Makarova | 7$^8$ | 6 | | | E Makarova | 1 | 3 | | | | | | | | | |
| | R Marino | 6$^6$ | 4 | | | | | | 8 | F Schiavone | 3 | 3 | | | | | |
| | L Šafářová | 6 | 4 | 6 | | | | | | L Šafářová | 6 | 6 | | | | | |
| Q | P Hercog | 3 | 6 | 3 | | L Šafářová | 6 | 6 | | | | | | | | | |
| Q | S Halep | 4 | 6 | 6 | Q | S Halep | 2 | 4 | | | | | | | | | |
| 12 | S Kuznetsova | 6 | 4 | 3 | | | | | | | | | | L Šafářová | 6 | 3 | 2 |
| 15 | J Janković | 1 | 3 | | | | | | | | | | | S Williams | 4 | 6 | 6 |
| | J Görges | 6 | 6 | | | J Görges | 1 | 6$^7$ | | | | | | | | | |
| PR | A Bondarenko | 0 | 3 | | | S Williams | 6 | 7$^9$ | | | | | | | | | |
| | S Williams | 6 | 6 | | | | | | | S Williams | 4 | 6 | 6 | | | | |
| Q | A Brianti | 2 | 1 | | | | | | Q | J Zheng | 6 | 3 | 3 | | | | |
| Q | J Zheng | 6 | 6 | | Q | J Zheng | 3 | 2 | | | | | | | | | |
| | | | | | 2 | K Clijsters | 6 | 1$^r$ | | | | | | | | | |