Venus, 32, climbed to 20th spot, despite not winning more points, as Germany's Julia Goerges dropped to 24th.

In other movements, former world no.1 Jelena Jankovic, of Serbia, rose three places to 21st after winning the Bogota Open on Sunday -- her first victory since 2010 and the 13th of her career.

In the top 10, Czech player Petra Kvitova jumped one place to seventh after her victory in Dubai against Italy's Sara Errani, who dropped to eighth.

Latest WTA world rankings:

1. Serena Williams (USA) 10.365 pts 2. Victoria Azarenka (BLR) 10.325 3. Maria Sharapova (RUS) 9715 4. Agnieszka Radwanska (POL) 7505 5. Li Na (CHN) 6130 6. Angelique Kerber (GER) 5400 7. Petra Kvitova (CZE) 4980 (+1) 8. Sara Errani (ITA) 4915 (-1) 9. Samantha Stosur (AUS) 3835 10. Caroline Wozniacki (DEN) 3570 11. Marion Bartoli (FRA) 3265 12. Nadia Petrova (RUS) 3050 13. Ana Ivanovic (SRB) 2836 14. Dominika Cibulkova (SVK) 2695 (+1) 15. Maria Kirilenko (RUS) 2671 (-1) 16. Roberta Vinci (ITA) 2665 (+1) 17. Sloane Stephens (USA) 2535 (-1) 18. Lucie Safarova (CZE) 2065 19. Ekaterina Makarova (RUS) 1950 20. Venus Williams (USA) 1810 (+1)