Rankings - TOP 20
(as of May 16, 2016)
1. Serena Williams (USA)
2. Agnieszka Radwanska (POL)
3. Angelique Kerber (GER)
4. Garbine Muguruza (ESP)
5. Victoria Azarenka (BLR)
6. Simona Halep (ROU)
7. Roberta Vinci (ITA)
8. Belinda Bencic (SUI)
9. Timea Bacsinszky (SUI)
10. Flavia Pennetta (ITA)
11. Venus Williams (USA)
12. Petra Kvitova (CZE)
13. Lucie Safarova (CZE)
14. Carla Suarez Navarro (ESP)
15. Svetlana Kuznetsova (RUS)
16. Ana Ivanovic (SRB)
17. Madison Keys (USA)
18.