Women's rankings

WTA singles rankings as of 18 August 2014:

1. Serena Williams (US)

2. Simona Halep (Rom)

3. Li Na (Chn)

4. Petra Kvitova (Cze)

5. Agnieszka Radwanska (Pol)

6. Maria Sharapova (Rus)

7. Angelique Kerber (Ger)

8. Eugenie Bouchard (Can)

9. Ana Ivanovic (Ser)

10. Jelena Jankovic (Ser)

11. Caroline Wozniacki (Den)

12. Flavia Pennetta (Ita)

13. Dominika Cibulkova (Svk)

14. Sara Errani (Ita)

15. Lucie Safarova (Cze)

16. Carla Suarez Navarro (Spa)

17. Victoria Azarenka (Blr)

18. Ekaterina Makarova (Rus)

19. Andrea Petkovic (Ger)

20. Venus Williams (USA)

Britons in top 300:

45. Heather Watson

121. Johanna Konta

146. Naomi Broady

179. Laura Robson

273. Tara Moore

292. Samantha Murray