WTA singles and doubles rankings as at January 31 (previous ranking in parenthesis):

1. (1) Caroline Wozniacki (Denmark) 8655 points

2. (3) Kim Clijsters (Belgium) 8515

3. (2) Vera Zvonareva (Russia) 7405

4. (7) Francesca Schiavone (Italy) 5055

5. (6) Samantha Stosur (Australia) 4862

6. (5) Venus Williams (U.S.) 4645

7. (11) Li Na (China) 4450

8. (8) Jelena Jankovic (Serbia) 4385

9. (9) Victoria Azarenka (Belarus) 3935

10. (14) Agnieszka Radwanska (Poland) 3340

11. (12) Shahar Peer (Israel) 3225

12. (4) Serena Williams (U.S.) 3035

13. (16) Maria Sharapova (Russia) 2936

14. (18) Anastasia Pavlyuchenkova (Russia) 2645

15. (17) Marion Bartoli (France) 2595

16. (25) Flavia Pennetta (Italy) 2535

17. (21) Kaia Kanepi (Estonia) 2460

18. (28) Petra Kvitova (Czech Republic) 2418

19. (20) Ana Ivanovic (Serbia) 2405

20. (15) Nadia Petrova (Russia) 2362

SA players' single rankings:

80 (107) Chanelle Scheepers

376 (379) Chanel Simmonds

542 (540) Natalie Grandin

SA players' doubles rankings:

43 (52) Natalie Grandin

112 (114) Chanelle Scheepers

494 (495) Chanel Simmonds