# 2009 Bank of the West Classic – Singles

Aleksandra Wozniak was the defending champion, but lost to Daniela Hantuchová in the first round.
Marion Bartoli reached her second straight final and won the title, defeating Venus Williams 6–2, 5–7, 6–4.

## Seeds

* Serena Williams (quarterfinals)
* Venus Williams (final)
* Elena Dementieva (semifinals)
* Jelena Janković (quarterfinals)
* Nadia Petrova (second round)
* Dominika Cibulková (first round)
* Agnieszka Radwańska (second round)
* Marion Bartoli (champion)

## 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

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| | Samantha Stosur | 3 | 6 | 1 | | | | | |
| 8 | Marion Bartoli | 6 | 1 | 6 | | | | | |
| 8 | Marion Bartoli | 6 | 1 | 6 | 8 | Marion Bartoli | 6 | 5 | 6 |
| | | | | | 2 | Venus Williams | 2 | 7 | 4 |
| 3 | Elena Dementieva | 0 | 1 | | 2 | Venus Williams | 2 | 7 | 4 |
| 2 | Venus Williams | 6 | 6 | | | | | | |

### Top half

| 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 | Semifinals |
| 1 | S Williams | 6 | 7$^8$ | | | | | | | | | | | | | | | |
| | N Li | 3 | 6$^6$ | 1 | S Williams | 6 | 7$^9$ | | | | | | | | | | | |
| | A Kleybanova | 0 | 5 | | M Czink | 3 | 6$^7$ | | | | | | | | | | | |
| | M Czink | 6 | 7 | | | | | | 1 | S Williams | 2 | 6 | 2 | | | | | |
| | M Niculescu | 6 | 6 | | | | | | | S Stosur | 6 | 3 | 6 | | | | | |
| | M Shaughnessy | 1 | 0 | | M Niculescu | 1 | 5 | | | | | | | | | | | |
| | S Stosur | 6 | 6 | | S Stosur | 6 | 7 | | | | | | | | | | | |
| 6 | D Cibulková | 4 | 3 | | | | | | | | | | | | S Stosur | 3 | 6 | 1 |
| 4 | J Janković | 6 | 6 | | | | | | | | | | | 8 | M Bartoli | 6 | 1 | 6 |
| Q | A Haynes | 3 | 1 | 4 | J Janković | 2 | 6 | 6 | | | | | | | | | | |
| Q | L Osterloh | 2 | 3 | | S Lisicki | 6 | 2 | 4 | | | | | | | | | | |
| | S Lisicki | 6 | 6 | | | | | | 4 | J Janković | 6 | 6$^3$ | 3 | | | | | |
| WC | H Barte | 2 | 1 | | | | | | 8 | M Bartoli | 3 | 7$^7$ | 6 | | | | | |
| Q | M Oudin | 6 | 6 | Q | M Oudin | 5 | 4 | | | | | | | | | | | |
| | A Morita | 6$^6$ | 3 | 8 | M Bartoli | 7 | 6 | | | | | | | | | | | |
| 8 | M Bartoli | 7$^8$ | 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 |
| 7 | A Radwańska | 6 | 6 | | | | | | | | | | | | | | |
| | S Cîrstea | 0 | 1 | | 7 | A Radwańska | 6 | 6$^6$ | 1 | | | | | | | | |
| | D Hantuchová | 6 | 4 | 7 | | D Hantuchová | 4 | 7$^8$ | 6 | | | | | | | | |
| | A Wozniak | 4 | 6 | 5 | | | | | | | D Hantuchová | 2 | 4 | | | | |
| | A Chakvetadze | 4 | 7 | 6$^5$ | | | | | | 3 | E Dementieva | 6 | 6 | | | | |
| | M Kirilenko | 6 | 5 | 7$^7$ | | M Kirilenko | 1 | 2 | | | | | | | | | |
| | A Keothavong | 1 | 4 | | 3 | E Dementieva | 6 | 6 | | | | | | | | | |
| 3 | E Dementieva | 6 | 6 | | | | | | | | | | | 3 | E Dementieva | 0 | 1 |
| 5 | N Petrova | 6 | 3 | 6 | | | | | | | | | | 2 | V Williams | 6 | 6 |
| | B Mattek-Sands | 3 | 6 | 3 | 5 | N Petrova | 1 | 2 | | | | | | | | | |
| | M Sharapova | 6 | 6$^6$ | 6 | | M Sharapova | 6 | 6 | | | | | | | | | |
| | A Sugiyama | 4 | 7$^8$ | 1 | | | | | | | M Sharapova | 2 | 2 | | | | |
| Q | A Kudryavtseva | 6 | 7$^7$ | | | | | | | 2 | V Williams | 6 | 6 | | | | |
| | J Coin | 1 | 6$^5$ | | Q | A Kudryavtseva | 1 | 5 | | | | | | | | | |
| WC | S Dubois | 2 | 3 | | 2 | V Williams | 6 | 7 | | | | | | | | | |
| 2 | V Williams | 6 | 6 | | | | | | | | | | | | | | |