Women's rankings

WTA singles rankings as of 14 April 2014:

1. Serena Williams (US)

2. Li Na (Chn)

3. Agnieszka Radwanska (Pol)

4. Victoria Azarenka (Blr)

5. Simona Halep (Rom)

6. Petra Kvitova (Cze)

7. Angelique Kerber (Ger)

8. Jelena Jankovic (Ser)

9. Maria Sharapova (Rus)

10. Dominika Cibulkova (Svk)

11. Sara Errani (Ita)

12. Ana Ivanovic (Ser)

13. Flavia Pennetta (Ita)

14. Sabine Lisicki (Ger)

15. Caroline Wozniacki (Den)

16. Carla Suarez Navarro (Spa)

17. Sloane Stephens (US)

18. Eugenie Bouchard (Can)

19. Samantha Stosur (Aus)

20. Roberta Vinci (Ita)

Britons in top 300:

64. Laura Robson

117. Johanna Konta

121. Heather Watson

218. Naomi Broady

219. Samantha Murray

242. Tara Moore

282. Jade Windley