Women's tennis rankings

WTA singles rankings as of 31 August 2015

1. Serena Williams (US)

2. Simona Halep (Rom)

3. Maria Sharapova (Rus)

4. Petra Kvitova (Cze)

5. Caroline Wozniacki (Den)

6. Lucie Safarova (Cze)

7. Ana Ivanovic (Ser)

8. Karolina Pliskova (Cze)

9. Garbine Muguruza (Spa)

10. Carla Suarez Navarro (Spa)

11. Angelique Kerber (Ger)

12. Belinda Bencic (Swi)

13. Ekaterina Makarova (Rus)

14. Timea Bacsinszky (Swi)

15. Agnieszka Radwanska (Pol)

16. Sara Errani (Ita)

17. Elina Svitolina (Ukr)

18. Andrea Petkovic (Ger)

19. Madison Keys (US)

20. Victoria Azarenka (Blr)

Britons in top 300:

61. Heather Watson

97. Johanna Konta

170. Naomi Broady