# 2011 Medibank International Sydney – Women's singles

Elena Dementieva was the defending champion, but retired from the sport at the end of the 2010 season.
Li Na won the title, defeating Kim Clijsters in the final 7–6$^{(7–3)}$, 6–3.

## Seeds

The top two seeds receive a bye to the second round.
* Caroline Wozniacki (second round)
* Vera Zvonareva (second round)
* Kim Clijsters (final)
* Samantha Stosur (second round)
* Francesca Schiavone (first round)
* Jelena Janković (first round)
* Victoria Azarenka (quarterfinals)
* Li Na (champion)

## 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 |
| | Alisa Kleybanova | 6 | 3 | 6$^1$ | | | | |
| 3 | Kim Clijsters | 4 | 6 | 7 | | | | |
| 3 | Kim Clijsters | 4 | 6 | 7 | 3 | Kim Clijsters | 6$^3$ | 3 |
| | | | | | 8 | Li Na | 7 | 6 |
| 8 | Li Na | 7 | 6 | | 8 | Li Na | 7 | 6 |
| Q | Bojana Jovanovski | 6$^5$ | 3 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | C Wozniacki | 3 | 3 | | | | | | | | | | |
| | M Kirilenko | 3 | 3 | | | D Cibulková | 6 | 6 | | | | | | | | | | |
| | D Cibulková | 6 | 6 | | | | | | | D Cibulková | 3 | 7 | 2 | | | | | |
| | MJ Martínez Sánchez | 6 | 6 | | | | | | | A Kleybanova | 6 | 5 | 6 | | | | | |
| | D Hantuchová | 2 | 4 | | | MJ Martínez Sánchez | 2 | 4 | | | | | | | | | | |
| | A Kleybanova | 6$^5$ | 6 | 6 | | A Kleybanova | 6 | 6 | | | | | | | | | | |
| 5 | F Schiavone | 7 | 1 | 2 | | | | | | | | | | | A Kleybanova | 6 | 3 | 6$^1$ |
| 3 | K Clijsters | 6 | 6 | | | | | | | | | | | 3 | K Clijsters | 4 | 6 | 7 |
| | A Dulgheru | 1 | 2 | | 3 | K Clijsters | 6 | 6 | | | | | | | | | | |
| Q | B Záhlavová-Strýcová | 6 | 6 | | Q | B Záhlavová-Strýcová | 1 | 4 | | | | | | | | | | |
| | N Petrova | 2 | 2 | | | | | | 3 | K Clijsters | 6 | 6 | | | | | | |
| LL | S Bammer | 3 | 7 | 1 | | | | | 7 | V Azarenka | 3 | 2 | | | | | | |
| | S Pe'er | 6 | 5 | 6 | | S Pe'er | 5 | 3 | | | | | | | | | | |
| Q | E Makarova | 6 | 2 | 4 | 7 | V Azarenka | 7 | 6 | | | | | | | | | | |
| 7 | V Azarenka | 2 | 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 | N Li | 6 | 6 | | | | | | | | | | | | | | | |
| WC | A Rodionova | 1 | 2 | | 8 | N Li | 6 | 1 | 6 | | | | | | | | | |
| Q | S Záhlavová | 6$^4$ | 2 | | Q | V Razzano | 4 | 6 | 4 | | | | | | | | | |
| Q | V Razzano | 7 | 6 | | | | | | | 8 | N Li | 3 | 7 | 6 | | | | |
| | S Kuznetsova | 6 | 6 | | | | | | | | S Kuznetsova | 6 | 6$^4$ | 3 | | | | |
| WC | J Dokić | 2 | 2 | | | S Kuznetsova | 3 | 6 | 6 | | | | | | | | | |
| | Y Wickmayer | 5 | 4 | | 4 | S Stosur | 6 | 3 | 4 | | | | | | | | | |
| 4 | S Stosur | 7 | 6 | | | | | | | | | | | | 8 | N Li | 7 | 6 |
| 6 | J Janković | 5 | 6 | 3 | | | | | | | | | | | Q | B Jovanovski | 6$^5$ | 3 |
| | A Rezaï | 7 | 2 | 6 | | A Rezaï | 6$^4$ | 6$^4$ | | | | | | | | | | |
| | K Kanepi | 4 | 4 | | Q | B Jovanovski | 7 | 7 | | | | | | | | | | |
| Q | B Jovanovski | 6 | 6 | | | | | | | Q | B Jovanovski | 6 | 6 | | | | | |
| | F Pennetta | 6 | 6 | | | | | | | | F Pennetta | 4 | 1 | | | | | |
| Q | L Hradecká | 4 | 3 | | | F Pennetta | 7 | 7 | | | | | | | | | | |
| | | | | | 2 | V Zvonareva | 5 | 5 | | | | | | | | | | |