Serena continues to dominate

Paris - Serena Williams continued to dominate the WTA rankings despite being sidelined with an injury to her left knee.

The 33-year-old American was forced to abandon her defence of the China Open earlier this month due to the injury, with second-ranking Maria Sharapova going on to win the tournament.

But she is still nearly 2 000 points clear of the Russian atop the rankings.

Injury has also blighted Canada's Eugenie Bourchard as she had to pull out of her second round tie in Linz last week.

That meant she dropped down one spot in the rankings from sixth to seventh with Agnieszka Radwanska of Poland moving ahead of her.

WTA world rankings:

1. Serena Williams (USA) 8 645

2. Maria Sharapova (RUS) 6 680

3. Simona Halep (ROM) 6 246

4. Petra Kvitova (CZE) 6 126

5. Li Na (CHN) 5 020

6. Agnieszka Radwanska (POL) 4 650 (+1)

7. Eugénie Bouchard (CAN) 4 523 (-1)

8. Ana Ivanovic (SRB) 4 435

9. Caroline Wozniacki (DEN) 4 215

10. Angelique Kerber (GER) 3 745

11. Sara Errani (ITA) 3 085

12. Ekaterina Makarova (RUS) 2 970 (+1)

13. Jelena Jankovic (SRB) 2 945 (+1)

14. Dominika Cibulkova (SVK) 2 908 (-2)

15. Flavia Pennetta (ITA) 2 642

16. Andrea Petkovic (GER) 2 495

17. Lucie Safarova (CZE) 2 460

18. Samantha Stosur (AUS) 2 430

19. Carla Suarez (ESP) 2 430

20. Venus Williams (USA) 2 370