Paris - Serena Williams remains streets ahead of the rest in the latest WTA rankings released on Monday, with the top 10 unchanged.
Timea Bacsinszky is up a place to 16th, despite losing both of her singles rubbers in Switzerland's Fed Cup semi-final defeat to the Czech Republic.
Ukrainian Elina Svitolina drops down after losing in the first round in Bogota.
WTA Top 20
1. Serena Williams (USA) 8,625 pts
2. Agnieszka Radwanska (POL) 5,775
3. Angelique Kerber (GER) 5,740
4. Garbine Muguruza (ESP) 4,831
5. Victoria Azarenka (BLR) 4,530
6. Simona Halep (ROM) 3,785
7. Petra Kvitova (CZE) 3,763
8. Roberta Vinci (ITA) 3,595
9. Maria Sharapova (RUS) 3,432
10. Belinda Bencic (SUI) 3,340
11. Carla Suarez Navarro (ESP) 3,160
12. Flavia Pennetta (ITA) 3,033
13. Svetlana Kuznetsova (RUS) 3,010
14. Venus Williams (USA) 2,941
15. Lucie Safarova (CZE) 2,768
16. Timea Bacsinszky (SUI) 2,735 (+1)
17. Elina Svitolina (UKR) 2,700 (-1)
18. Karolina Pliskova (CZE) 2,590
19. Ana Ivanovic (SRB) 2,531
20. Sara Errani (ITA) 2,505