# 2010 Medibank International Sydney – Women's singles

In a rematch of last year's semifinal, Elena Dementieva successfully defended her title, beating world No. 1 Serena Williams in the final 6–3, 6–2.

## Seeds

The top two seeds receive a bye to the second round.
* Serena Williams (final)
* Dinara Safina (quarterfinals)
* Svetlana Kuznetsova (second round)
* Caroline Wozniacki (first round)
* Elena Dementieva (champion)
* Victoria Azarenka (semifinals)
* Jelena Janković (first round)
* Vera Zvonareva (first round, retired due to right ankle injury)

## 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 |
| 1 | Serena Williams | 3 | 7 | 6 | | | | |
| | Aravane Rezaï | 6 | 5 | 4 | | | | |
| | Aravane Rezaï | 6 | 5 | 4 | 1 | Serena Williams | 3 | 2 |
| | | | | | 5 | Elena Dementieva | 6 | 6 |
| 6 | Victoria Azarenka | 3 | 1 | | 5 | Elena Dementieva | 6 | 6 |
| 5 | Elena Dementieva | 6 | 6 | | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| | | | | | 1 | S Williams | 6 | 6 | | | | | | | | | |
| | MJ Martínez Sánchez | 6 | 6 | | | MJ Martínez Sánchez | 1 | 2 | | | | | | | | | |
| Q | V Lepchenko | 3 | 3 | | | | | | 1 | S Williams | 6 | 6 | | | | | |
| Q | V Dushevina | 6 | 6 | | | | | | Q | V Dushevina | 2 | 2 | | | | | |
| WC | C Dellacqua | 2 | 2 | | Q | V Dushevina | 6 | 6 | | | | | | | | | |
| | E Vesnina | 3 | | | | E Vesnina | 3 | 4 | | | | | | | | | |
| 8 | V Zvonareva | 3 | r | | | | | | | | | | 1 | S Williams | 3 | 7 | 6 |
| 4 | C Wozniacki | 6 | 3 | 2 | | | | | | | | | | A Rezaï | 6 | 5 | 4 |
| | N Li | 2 | 6 | 6 | | N Li | 2 | 6$^4$ | | | | | | | | | |
| | S Stosur | 3 | 1 | | | F Pennetta | 6 | 7 | | | | | | | | | |
| | F Pennetta | 6 | 6 | | | | | | | F Pennetta | 3 | 0 | | | | | |
| | A Rezaï | 6$^3$ | 6 | 6 | | | | | | A Rezaï | 6 | 6 | | | | | |
| Q | A Grönefeld | 7 | 2 | 2 | | A Rezaï | 6 | 7 | | | | | | | | | |
| Q | Á Szávay | 5 | 6 | 7 | Q | Á Szávay | 3 | 6$^5$ | | | | | | | | | |
| 7 | J Janković | 7 | 1 | 5 | | | | | | | | | | | | | |

### 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 |
| 6 | V Azarenka | 3 | 6 | 7 | | | | | | | | | | | | | | |
| | S Lisicki | 6 | 2 | 5 | 6 | V Azarenka | 6 | 5 | 7 | | | | | | | | | |
| | N Petrova | 3 | 7 | 4 | Q | K Date-Krumm | 1 | 7 | 5 | | | | | | | | | |
| Q | K Date-Krumm | 6 | 5 | 6 | | | | | | 6 | V Azarenka | 2 | 6 | 7 | | | | |
| LL | T Bacsinszky | 6$^2$ | 1 | | | | | | | | D Cibulková | 6 | 2 | 5 | | | | |
| | D Cibulková | 7 | 6 | | | D Cibulková | 7 | 6 | | | | | | | | | | |
| | A Kleybanova | 2 | 7 | 5 | 3 | S Kuznetsova | 5 | 2 | | | | | | | | | | |
| 3 | S Kuznetsova | 6 | 6$^3$ | 7 | | | | | | | | | | | 6 | V Azarenka | 3 | 1 |
| 5 | E Dementieva | 6 | 7 | | | | | | | | | | | | 5 | E Dementieva | 6 | 6 |
| | F Schiavone | 2 | 5 | | 5 | E Dementieva | 6 | 4 | 6 | | | | | | | | | |
| | V Razzano | 3 | 0 | | | D Hantuchová | 2 | 6 | 2 | | | | | | | | | |
| | D Hantuchová | 6 | 6 | | | | | | | 5 | E Dementieva | 6 | 6 | | | | | |
| Q | J Craybas | 0 | 4 | | | | | | | 2 | D Safina | 2 | 3 | | | | | |
| | A Radwańska | 6 | 6 | | | A Radwańska | 5 | 4 | | | | | | | | | | |
| | | | | | 2 | D Safina | 7 | 6 | | | | | | | | | | |