# 2009 Medibank International Sydney – Women's singles

Justine Henin was the defending champion, but retired from the sport on May 14, 2008.
Elena Dementieva won the all-Russian final, 6–3, 2–6, 6–1, over Dinara Safina.
World No. 2 and the first seed Serena Williams was nearly out of the tournament two times. Williams saved four match points in her first round clash against Samantha Stosur & three more against Caroline Wozniacki in the quarterfinals. Williams was defeated by the eventual champion Dementieva in the semifinals in straight sets.

## Seeds

* Serena Williams (semifinals)
* Dinara Safina (final)
* Elena Dementieva (champion)
* Vera Zvonareva (withdrew due to gastrointestinal illness)
* Svetlana Kuznetsova (quarterfinals, withdrew due to an abdominal strain)
* Agnieszka Radwańska (quarterfinals)
* Nadia Petrova (first round)
* Caroline Wozniacki (quarterfinals)

## 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 | Final |
| 1 | Serena Williams | 3 | 1 | | | | | |
| 3 | Elena Dementieva | 6 | 6 | | | | | |
| 3 | Elena Dementieva | 6 | 6 | 3 | Elena Dementieva | 6 | 2 | 6 |
| | | | | 2 | Dinara Safina | 3 | 6 | 1 |
| | Ai Sugiyama | 4 | 6$^3$ | 2 | Dinara Safina | 3 | 6 | 1 |
| 2 | Dinara Safina | 6 | 7 | | | | | |

### 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 |
| 1 | S Williams | 6 | 6$^4$ | 7 | | | | | | | | | | | | | |
| | S Stosur | 3 | 7 | 5 | 1 | S Williams | 6 | 6 | | | | | | | | | |
| | S Errani | 6 | 6 | | | S Errani | 1 | 2 | | | | | | | | | |
| | C Dellacqua | 1 | 2 | | | | | | 1 | S Williams | 6$^5$ | 6 | 7 | | | | |
| | M Bartoli | 1 | r | | | | | | 8 | C Wozniacki | 7 | 3 | 6$^3$ | | | | |
| Q | M South | 1 | | | Q | M South | 2 | 0 | | | | | | | | | |
| | D Cibulková | 1 | 2 | | 8 | C Wozniacki | 6 | 6 | | | | | | | | | |
| 8 | C Wozniacki | 6 | 6 | | | | | | | | | | | 1 | S Williams | 3 | 1 |
| 3 | E Dementieva | 7 | 6 | | | | | | | | | | | 3 | E Dementieva | 6 | 6 |
| | E Makarova | 5 | 1 | | 3 | E Dementieva | 6 | 6 | | | | | | | | | |
| LL | K Knapp | 4 | 2 | | WC | J Gajdošová | 2 | 4 | | | | | | | | | |
| WC | J Gajdošová | 6 | 6 | | | | | | 3 | E Dementieva | 6 | 5 | 6 | | | | |
| Q | K Zakopalová | 3 | 0 | | | | | | 6 | A Radwańska | 2 | 7 | 4 | | | | |
| | D Hantuchová | 6 | 6 | | | D Hantuchová | 3 | 5 | | | | | | | | | |
| | S Bammer | 4 | 3 | | 6 | A Radwańska | 6 | 7 | | | | | | | | | |
| 6 | A Radwańska | 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 | Semifinals | Semifinals | Semifinals | Semifinals |
| 5 | S Kuznetsova | 3 | 6 | 6 | | | | | | | | | | | | | |
| | S Peng | 6 | 1 | 3 | 5 | S Kuznetsova | 6 | 2 | 7 | | | | | | | | |
| | K Kanepi | 6 | 7 | | | K Kanepi | 2 | 6 | 6$^3$ | | | | | | | | |
| Q | A Kerber | 1 | 5 | | | | | | | 5 | S Kuznetsova | | | | | | |
| LL | J Craybas | 2 | 3 | | | | | | | | A Sugiyama | w/o | | | | | |
| | A Sugiyama | 6 | 6 | | | A Sugiyama | 2 | 6 | 6 | | | | | | | | |
| | A Medina Garrigues | 6 | 3 | 6 | | A Medina Garrigues | 6 | 1 | 2 | | | | | | | | |
| LL | A Yakimova | 1 | 6 | 3 | | | | | | | | | | | A Sugiyama | 4 | 6$^3$ |
| 7 | N Petrova | 2 | 4 | | | | | | | | | | | 2 | D Safina | 6 | 7 |
| | A Cornet | 6 | 6 | | | A Cornet | 7 | 6 | | | | | | | | | |
| | M Kirilenko | 2 | 2 | | | A Kleybanova | 6$^5$ | 1 | | | | | | | | | |
| | A Kleybanova | 6 | 6 | | | | | | | | A Cornet | 3 | 4 | | | | |
| WC | E Starr | 0 | 1 | | | | | | | 2 | D Safina | 6 | 6 | | | | |
| Q | V Dushevina | 6 | 6 | | Q | V Dushevina | 3 | 0 | | | | | | | | | |
| | S Cîrstea | 2 | 1 | | 2 | D Safina | 6 | 6 | | | | | | | | | |
| 2 | D Safina | 6 | 6 | | | | | | | | | | | | | | |