Women's tennis rankings

WTA singles rankings as of 23 March 2015

1. Serena Williams (US)

2. Maria Sharapova (Rus)

3. Simona Halep (Rom)

4. Petra Kvitova (Cze)

5. Caroline Wozniacki (Den)

6. Ana Ivanovic (Ser)

7. Eugenie Bouchard (Can)

8. Agnieszka Radwanska (Pol)

9. Ekaterina Makarova (Rus)

10. Andrea Petkovic (Ger)

11. Lucie Safarova (Cze)

12. Carla Suarez Navarro (Spa)

13. Sara Errani (Ita)

14. Karolina Pliskova (Cze)

15. Angelique Kerber (Ger)

16. Venus Williams (US)

17. Jelena Jankovic (Ser)

18. Madison Keys (US)

19. Garbine Muguruza (Spa)

20. Peng Shuai (Chn)

Britons in top 300:

41. Heather Watson

151. Johanna Konta

164. Naomi Broady

276. Katy Dunne