2012 HP Open – Singles
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Marion Bartoli was the defending champion, but chose not to compete.
Heather Watson won the title after a marathon 3 hour 12 minute battle with Chang Kai-chen. The match saw Watson hold match point before Chang came back and won the second set. Chang went up a break and had multiple match points at 5–4 before Watson broke and won a final-set tiebreak. Watson won by a score of 7–5, 5–7, 7–6(7–4). Watson became the first British player to win the WTA Tour level since Sara Gomer in the 1988 Women's California State Championships.
Seeds
- Australia Samantha Stosur (semifinals)
- China Zheng Jie (second round)
- United States Christina McHale (first round)
- Italy Francesca Schiavone (first round, retired)
- Kazakhstan Yaroslava Shvedova (first round)
- Spain Anabel Medina Garrigues (second round)
- South Africa Chanelle Scheepers (quarterfinals)
- United Kingdom Laura Robson (quarterfinals)
Draw
Key
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- ITF = ITF entry
- PR = Protected ranking
- SR = Special ranking
- SE = Special exempt
- JE = Junior exempt
- JR = Junior Accelerator Programme entrant
- CO = College Accelerator Programme entrant
- NG = Next Gen Accelerator Program entrant
- w/o = Walkover
- r = Retired
- d = Defaulted
Finals
| Semifinals | Final | ||||||||||||
| 1 | Australia Samantha Stosur | 4 | 6 | 63 | |||||||||
| Chinese Taipei Chang Kai-chen | 6 | 4 | 77 | ||||||||||
| Chinese Taipei Chang Kai-chen | 5 | 7 | 64 | ||||||||||
| United Kingdom Heather Watson | 7 | 5 | 77 | ||||||||||
| Japan Misaki Doi | 62 | 5 | |||||||||||
| United Kingdom Heather Watson | 77 | 7 |
Top half
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | Australia S Stosur | 6 | 6 | ||||||||||||||||||||||||
| Japan E Sema | 4 | 2 | 1 | Australia S Stosur | 1 | 6 | 6 | ||||||||||||||||||||
| Q | Thailand N Luangnam | 3 | 3 | France V Razzano | 6 | 2 | 4 | ||||||||||||||||||||
| France V Razzano | 6 | 6 | 1 | Australia S Stosur | 6 | 6 | |||||||||||||||||||||
| Japan A Morita | 3 | 2 | United States J Hampton | 2 | 4 | ||||||||||||||||||||||
| United States J Hampton | 6 | 6 | United States J Hampton | 7 | 7 | ||||||||||||||||||||||
| WC | Thailand T Tanasugarn | 6 | 6 | WC | Thailand T Tanasugarn | 5 | 5 | ||||||||||||||||||||
| 5 | Kazakhstan Y Shvedova | 3 | 2 | 1 | Australia S Stosur | 4 | 6 | 63 | |||||||||||||||||||
| 3 | United States C McHale | 3 | 65 | Chinese Taipei K-c Chang | 6 | 4 | 77 | ||||||||||||||||||||
| Chinese Taipei K-c Chang | 6 | 77 | Chinese Taipei K-c Chang | 77 | 6 | ||||||||||||||||||||||
| Japan K Date-Krumm | 3 | 6 | 4 | Australia C Dellacqua | 64 | 3 | |||||||||||||||||||||
| Australia C Dellacqua | 6 | 3 | 6 | Chinese Taipei K-c Chang | 6 | 3 | 77 | ||||||||||||||||||||
| Q | China Y Zhou | 7 | 6 | 8 | United Kingdom L Robson | 4 | 6 | 64 | |||||||||||||||||||
| WC | Japan K Nara | 5 | 4 | Q | China Y Zhou | 4 | 4 | ||||||||||||||||||||
| Greece E Daniilidou | 4 | 2 | 8 | United Kingdom L Robson | 6 | 6 | |||||||||||||||||||||
| 8 | United Kingdom L Robson | 6 | 6 |
Bottom half
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 7 | South Africa C Scheepers | 6 | 6 | ||||||||||||||||||||||||
| United States A Glatch | 4 | 1 | 7 | South Africa C Scheepers | 6 | 6 | |||||||||||||||||||||
| Croatia M Lučić | 4 | 6 | 6 | Croatia M Lučić | 2 | 2 | |||||||||||||||||||||
| Q | Thailand L Kumkhum | 6 | 3 | 4 | 7 | South Africa C Scheepers | 6 | 1 | 3 | ||||||||||||||||||
| Japan M Doi | 7 | 3 | 6 | Japan M Doi | 2 | 6 | 6 | ||||||||||||||||||||
| United States J Cohen | 5 | 6 | 0 | Japan M Doi | 6 | 6 | |||||||||||||||||||||
| Q | Russia O Puchkova | 6 | 2 | Q | Russia O Puchkova | 3 | 2 | ||||||||||||||||||||
| 4/WC | Italy F Schiavone | 4 | 1r | Japan M Doi | 62 | 5 | |||||||||||||||||||||
| 6 | Spain A Medina Garrigues | 3 | 6 | 6 | United Kingdom H Watson | 77 | 7 | ||||||||||||||||||||
| Italy C Giorgi | 6 | 2 | 2 | 6 | Spain A Medina Garrigues | 77 | 2 | 3 | |||||||||||||||||||
| United Kingdom H Watson | 6 | 6 | United Kingdom H Watson | 64 | 6 | 6 | |||||||||||||||||||||
| Slovenia P Hercog | 4 | 4 | United Kingdom H Watson | 7 | 6 | ||||||||||||||||||||||
| France M Johansson | 2 | 2 | France P Parmentier | 5 | 3 | ||||||||||||||||||||||
| France P Parmentier | 6 | 6 | France P Parmentier | 6 | 6 | ||||||||||||||||||||||
| Spain MJ Martínez Sánchez | 6 | 5 | 4 | 2 | China J Zheng | 3 | 4 | ||||||||||||||||||||
| 2 | China J Zheng | 4 | 7 | 6 |
Qualifying
Seeds
- Sweden Johanna Larsson (qualifying competition)
- Russia Olga Puchkova (qualified)
- Canada Eugenie Bouchard (qualifying competition)
- Japan Yurika Sema (first round, retired)
- China Wang Qiang (first round)
- Japan Junri Namigata (second round)
- Thailand Luksika Kumkhum (qualified)
- Thailand Nudnida Luangnam (qualified)
Qualifiers
Draw
First qualifier
| First round | Second round | Qualifying competition | ||||||||||||||||||
| 1 | Sweden Johanna Larsson | 6 | 6 | |||||||||||||||||
| Thailand Varatchaya Wongteanchai | 4 | 4 | ||||||||||||||||||
| 1 | Sweden Johanna Larsson | 1 | 78 | 6 | ||||||||||||||||
| Japan Miharu Imanishi | 6 | 66 | 0 | |||||||||||||||||
| Japan Rika Fujiwara | 5 | 2 | ||||||||||||||||||
| Japan Miharu Imanishi | 7 | 6 | ||||||||||||||||||
| 1 | Sweden Johanna Larsson | 4 | 3 | |||||||||||||||||
| 8 | Thailand Nudnida Luangnam | 6 | 6 | |||||||||||||||||
| WC | United Kingdom Robyn Beddow | 2 | 0 | |||||||||||||||||
| Russia Ksenia Lykina | 6 | 6 | ||||||||||||||||||
| Russia Ksenia Lykina | 3 | 4 | ||||||||||||||||||
| 8 | Thailand Nudnida Luangnam | 6 | 6 | |||||||||||||||||
| WC | Japan Yoshimi Kawasaki | 0 | 0 | |||||||||||||||||
| 8 | Thailand Nudnida Luangnam | 6 | 6 |
Second qualifier
| First round | Second round | Qualifying competition | ||||||||||||||||||
| 2 | Russia Olga Puchkova | 6 | 6 | |||||||||||||||||
| Kazakhstan Zarina Diyas | 1 | 4 | ||||||||||||||||||
| 2 | Russia Olga Puchkova | 6 | 6 | |||||||||||||||||
| Japan Miki Miyamura | 3 | 1 | ||||||||||||||||||
| WC | Japan Chihiro Takayama | 2 | 0 | |||||||||||||||||
| Japan Miki Miyamura | 6 | 6 | ||||||||||||||||||
| 2 | Russia Olga Puchkova | 6 | 6 | |||||||||||||||||
| Japan Aki Yamasoto | 2 | 4 | ||||||||||||||||||
| Japan Kazusa Ito | 4 | 3 | ||||||||||||||||||
| Thailand Noppawan Lertcheewakarn | 6 | 6 | ||||||||||||||||||
| Thailand Noppawan Lertcheewakarn | 3 | 1 | ||||||||||||||||||
| Japan Aki Yamasoto | 6 | 6 | ||||||||||||||||||
| Japan Aki Yamasoto | 4 | 6 | 6 | |||||||||||||||||
| 5 | China Wang Qiang | 6 | 3 | 4 |
Third qualifier
| First round | Second round | Qualifying competition | ||||||||||||||||||
| 3 | Canada Eugenie Bouchard | 2 | 6 | 6 | ||||||||||||||||
| Japan Eri Hozumi | 6 | 4 | 4 | |||||||||||||||||
| 3 | Canada Eugenie Bouchard | 4 | 6 | 6 | ||||||||||||||||
| Russia Daria Gavrilova | 6 | 1 | 4 | |||||||||||||||||
| United States Alexandra Stevenson | 1 | 3 | ||||||||||||||||||
| Russia Daria Gavrilova | 6 | 6 | ||||||||||||||||||
| 3 | Canada Eugenie Bouchard | 1 | 2 | |||||||||||||||||
| 7 | Thailand Luksika Kumkhum | 6 | 6 | |||||||||||||||||
| WC | Japan Miyu Kato | 63 | 3 | |||||||||||||||||
| Hungary Katalin Marosi | 77 | 6 | ||||||||||||||||||
| Hungary Katalin Marosi | 6 | 1 | 2 | |||||||||||||||||
| 7 | Thailand Luksika Kumkhum | 4 | 6 | 6 | ||||||||||||||||
| Japan Misa Eguchi | 3 | 4 | ||||||||||||||||||
| 7 | Thailand Luksika Kumkhum | 6 | 6 |
Fourth qualifier
| First round | Second round | Qualifying competition | ||||||||||||||||||
| 4 | Japan Yurika Sema | 6 | 3 | 2r | ||||||||||||||||
| WC | Japan Risa Ozaki | 2 | 6 | 3 | ||||||||||||||||
| WC | Japan Risa Ozaki | 3 | 6 | 2 | ||||||||||||||||
| Japan Shuko Aoyama | 6 | 0 | 6 | |||||||||||||||||
| Japan Shuko Aoyama | 6 | 6 | ||||||||||||||||||
| WC | Croatia Darija Jurak | 2 | 2 | |||||||||||||||||
| Japan Shuko Aoyama | 2 | 3 | ||||||||||||||||||
| China Zhou Yimiao | 6 | 6 | ||||||||||||||||||
| China Zhou Yimiao | 710 | 6 | ||||||||||||||||||
| WC | Japan Riko Sawayanagi | 68 | 2 | |||||||||||||||||
| China Zhou Yimiao | 6 | 77 | ||||||||||||||||||
| 6 | Japan Junri Namigata | 2 | 61 | |||||||||||||||||
| Japan Erika Takao | 2 | 5 | ||||||||||||||||||
| 6 | Japan Junri Namigata | 6 | 7 |