# 2012 Mercury Insurance Open – Singles

Agnieszka Radwańska was the defending champion but chose not to compete. Dominika Cibulková defeated her close friend Marion Bartoli 6–1, 7–5 in the final to win the tournament.

## Seeds

The top four seeds receive a bye into the second round.
* Marion Bartoli (final)
* Dominika Cibulková (champion)
* Jelena Janković (quarterfinals)
* Nadia Petrova (semifinals)
* Christina McHale (quarterfinals)
* Daniela Hantuchová (first round)
* Yanina Wickmayer (first round, retired because of a lower back injury)
* Chanelle Scheepers (second round)

## 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 | Marion Bartoli | 1 | 6 | 6 | | | | |
| Q | Chan Yung-jan | 6 | 3 | 3 | | | | |
| Q | Chan Yung-jan | 6 | 3 | 3 | 1 | Marion Bartoli | 1 | 5 |
| | | | | | 2 | Dominika Cibulková | 6 | 7 |
| 4 | Nadia Petrova | 6$^8$ | 1 | | 2 | Dominika Cibulková | 6 | 7 |
| 2 | Dominika Cibulková | 7$^{10}$ | 6 | | | | | |

### Top 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 | Semifinals |
| | | | | | 1 | M Bartoli | 6 | 5 | 6 | | | | | | | | | | |
| | K-c Chang | 1 | 4 | | | V King | 4 | 7 | 4 | | | | | | | | | | |
| | V King | 6 | 6 | | | | | | | 1 | M Bartoli | 7 | 4 | 6 | | | | | |
| Q | M Larcher de Brito | 7$^8$ | 1 | 3 | | | | | | 5 | C McHale | 5 | 6 | 4 | | | | | |
| | M Doi | 6$^6$ | 6 | 6 | | M Doi | 6 | 4 | 4 | | | | | | | | | | |
| | J Gajdošová | 6$^5$ | 5 | | 5 | C McHale | 4 | 6 | 6 | | | | | | | | | | |
| 5 | C McHale | 7$^7$ | 7 | | | | | | | | | | | | 1 | M Bartoli | 1 | 6 | 6 |
| | | | | | | | | | | | | | | | Q | Y-j Chan | 6 | 3 | 3 |
| | | | | | 3 | J Janković | 2 | 6 | 6 | | | | | | | | | | |
| Q | S Karatantcheva | 2 | 6 | 5 | | M Czink | 6 | 4 | 4 | | | | | | | | | | |
| | M Czink | 6 | 4 | 7 | | | | | | 3 | J Janković | 7$^7$ | 6$^8$ | 5 | | | | | |
| | E Daniilidou | 3 | 3 | | | | | | | Q | Y-j Chan | 6$^4$ | 7$^{10}$ | 7 | | | | | |
| | H Watson | 6 | 6 | | | H Watson | 3 | 6$^2$ | | | | | | | | | | | |
| Q | Y-j Chan | 7$^8$ | | | Q | Y-j Chan | 6 | 7$^7$ | | | | | | | | | | | |
| 7 | Y Wickmayer | 6$^6$ | r | | | | | | | | | | | | | | | | |

### Bottom 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 |
| 8 | C Scheepers | 6 | 7$^7$ | | | | | | | | | | | | | | |
| WC | C Vandeweghe | 2 | 6$^4$ | | 8 | C Scheepers | 4 | 2 | | | | | | | | | |
| | V Lepchenko | 6 | 6 | | | V Lepchenko | 6 | 6 | | | | | | | | | |
| WC | N Gibbs | 3 | 1 | | | | | | | V Lepchenko | 4 | 6 | 6$^5$ | | | | |
| WC | L Davis | 3 | 2 | | | | | | 4 | N Petrova | 6 | 2 | 7$^7$ | | | | |
| Q | A Glatch | 6 | 6 | | Q | A Glatch | 4 | 3 | | | | | | | | | |
| | | | | | 4 | N Petrova | 6 | 6 | | | | | | | | | |
| | | | | | | | | | | | | | | 4 | N Petrova | 6$^8$ | 1 |
| 6/WC | D Hantuchová | 4 | 5 | | | | | | | | | | | 2 | D Cibulková | 7$^{10}$ | 6 |
| | U Radwańska | 6 | 7 | | | U Radwańska | 6 | 6 | | | | | | | | | |
| LL | M Oudin | 1 | 7$^8$ | 6 | LL | M Oudin | 2 | 1 | | | | | | | | | |
| | S Stephens | 6 | 6$^6$ | 0 | | | | | | U Radwańska | 4 | 4 | | | | | |
| | M Erakovic | 6 | 6 | | | | | | 2 | D Cibulková | 6 | 6 | | | | | |
| | A Keothavong | 4 | 0 | | | M Erakovic | 2 | 4 | | | | | | | | | |
| | | | | | 2 | D Cibulková | 6 | 6 | | | | | | | | | |

## Qualifying
### Seeds

* Camila Giorgi (first round)
* Sesil Karatantcheva (qualified)
* Melanie Oudin (qualifying competition, lucky loser)
* Erika Sema (first round)
* Michelle Larcher de Brito (qualified)
* Irena Pavlovic (qualifying competition)
* Alexa Glatch (qualified)
* Madison Brengle (qualifying competition)

### Qualifiers

* Alexa Glatch
* Sesil Karatantcheva
* Michelle Larcher de Brito
* Chan Yung-jan

### Lucky loser

* Melanie Oudin

### Draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 1 | Camila Giorgi | 4 | 1 | | | | |
| | Noppawan Lertcheewakarn | 6 | 6 | | | | |
| | Noppawan Lertcheewakarn | 6 | 6 | | Noppawan Lertcheewakarn | 5 | 1 |
| | | | | 7 | Alexa Glatch | 7 | 6 |
| | Heidi El Tabakh | 1 | 3 | 7 | Alexa Glatch | 7 | 6 |
| 7 | Alexa Glatch | 6 | 6 | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 2 | Sesil Karatantcheva | 6 | 0 | 6 | | | | |
| | Grace Min | 0 | 6 | 2 | | | | |
| | Grace Min | 0 | 6 | 2 | 2 | Sesil Karatantcheva | 7 | 7 |
| | | | | | 8 | Madison Brengle | 5 | 5 |
| WC | Zoë Gwen Scandalis | 2 | 4 | | 8 | Madison Brengle | 5 | 5 |
| 8 | Madison Brengle | 6 | 6 | | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 3 | Melanie Oudin | 7$^7$ | 6 | | | | |
| | Jessica Pegula | 6$^2$ | 2 | | | | |
| | Jessica Pegula | 6$^2$ | 2 | 3 | Melanie Oudin | 4 | 2 |
| | | | | 5 | Michelle Larcher de Brito | 6 | 6 |
| | Julia Boserup | 3 | 2 | 5 | Michelle Larcher de Brito | 6 | 6 |
| 5 | Michelle Larcher de Brito | 6 | 6 | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 4 | Erika Sema | 4 | 6 | 5 | | | | |
| | Chan Yung-jan | 6 | 4 | 7 | | | | |
| | Chan Yung-jan | 6 | 4 | 7 | | Chan Yung-jan | 6 | 6 |
| | | | | | 6 | Irena Pavlovic | 3 | 4 |
| WC | Jelena Durišič | 4 | 0 | | 6 | Irena Pavlovic | 3 | 4 |
| 6 | Irena Pavlovic | 6 | 6 | | | | | |