2011 HP Open – Singles
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Tamarine Tanasugarn was the defending champion, but lost to Angelique Kerber in the quarterfinals.
No.2 seed Marion Bartoli won the 2011 title, defeating No.1 seed and US Open Champion Samantha Stosur 6–3, 6–1.
Seeds
- Australia Samantha Stosur (final)
- France Marion Bartoli (champion)
- Germany Angelique Kerber (semifinals)
- Czech Republic Petra Cetkovská (quarterfinals)
- Australia Jarmila Gajdošová (second round)
- Japan Ayumi Morita (quarterfinals)
- South Africa Chanelle Scheepers (quarterfinals)
- United States Christina McHale (first round)
Qualifying
Main 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 | 77 | 3 | 6 | |||||||||
| China Zheng Jie | 65 | 6 | 3 | ||||||||||
| 1 | Australia Samantha Stosur | 3 | 1 | ||||||||||
| 2/WC | France Marion Bartoli | 6 | 6 | ||||||||||
| 3 | Germany Angelique Kerber | 1 | 65 | ||||||||||
| 2/WC | France Marion Bartoli | 6 | 77 |
Top half
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | Australia S Stosur | 6 | 3 | 7 | |||||||||||||||||||||||
| Q | Thailand N Lertcheewakarn | 3 | 6 | 5 | 1 | Australia S Stosur | 6 | 6 | |||||||||||||||||||
| United States C Vandeweghe | 4 | 4 | Japan M Doi | 2 | 4 | ||||||||||||||||||||||
| Japan M Doi | 6 | 6 | 1 | Australia S Stosur | 6 | 6 | |||||||||||||||||||||
| Q | Japan S Aoyama | 2 | 0 | 7 | South Africa C Scheepers | 2 | 3 | ||||||||||||||||||||
| Q | Kazakhstan Y Shvedova | 6 | 6 | Q | Kazakhstan Y Shvedova | 6 | 3 | 65 | |||||||||||||||||||
| Russia A Kudryavtseva | 2 | 2 | 7 | South Africa C Scheepers | 4 | 6 | 77 | ||||||||||||||||||||
| 7 | South Africa C Scheepers | 6 | 6 | 1 | Australia S Stosur | 77 | 3 | 6 | |||||||||||||||||||
| 4 | Czech Republic P Cetkovská | 6 | 77 | China J Zheng | 65 | 6 | 3 | ||||||||||||||||||||
| Japan K Date-Krumm | 2 | 62 | 4 | Czech Republic P Cetkovská | 6 | 6 | |||||||||||||||||||||
| Luxembourg M Minella | 3 | 3 | Q | Japan E Sema | 0 | 3 | |||||||||||||||||||||
| Q | Japan E Sema | 6 | 6 | 4 | Czech Republic P Cetkovská | 6 | 5 | 3 | |||||||||||||||||||
| Slovakia Z Kučová | 1 | 1 | China J Zheng | 0 | 7 | 6 | |||||||||||||||||||||
| China J Zheng | 6 | 6 | China J Zheng | 7 | 6 | ||||||||||||||||||||||
| WC | Japan A Nakamura | 0 | 1 | 5 | Australia J Gajdošová | 5 | 3 | ||||||||||||||||||||
| 5 | Australia J Gajdošová | 6 | 6 |
Bottom half
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | United States C McHale | 3 | 5 | ||||||||||||||||||||||||
| Thailand T Tanasugarn | 6 | 7 | Thailand T Tanasugarn | 6 | 6 | ||||||||||||||||||||||
| France M Johansson | 6 | 6 | France M Johansson | 2 | 4 | ||||||||||||||||||||||
| United States I Falconi | 3 | 2 | Thailand T Tanasugarn | 3 | 4 | ||||||||||||||||||||||
| Chinese Taipei Y-J Chan | 1 | 6 | 4 | 3 | Germany A Kerber | 6 | 6 | ||||||||||||||||||||
| Belarus O Govortsova | 6 | 2 | 6 | Belarus O Govortsova | 1 | 3 | |||||||||||||||||||||
| WC | Japan K Nara | 2 | 1 | 3 | Germany A Kerber | 6 | 6 | ||||||||||||||||||||
| 3 | Germany A Kerber | 6 | 6 | 3 | Germany A Kerber | 1 | 65 | ||||||||||||||||||||
| 6 | Japan A Morita | 77 | 6 | 2/WC | France M Bartoli | 6 | 77 | ||||||||||||||||||||
| China S Zhang | 63 | 2 | 6 | Japan A Morita | 6 | 6 | |||||||||||||||||||||
| Greece E Daniilidou | 6 | 6 | Greece E Daniilidou | 2 | 3 | ||||||||||||||||||||||
| Russia A Pivovarova | 2 | 2 | 6 | Japan A Morita | 2 | 1 | |||||||||||||||||||||
| United States J Craybas | 1 | 6 | 1 | 2/WC | France M Bartoli | 6 | 6 | ||||||||||||||||||||
| United States V King | 6 | 3 | 6 | United States V King | 1 | 2 | |||||||||||||||||||||
| Hungary M Czink | 2 | 2 | 2/WC | France M Bartoli | 6 | 6 | |||||||||||||||||||||
| 2/WC | France M Bartoli | 6 | 6 |