Paris - Romania's Simona Halep led an unchanged top 20 in the WTA rankings published on Monday after a weekend of Fed Cup action.

1. Simona Halep (ROM) 8 140 pts

2. Caroline Wozniacki (DEN) 6 790

3. Garbine Muguruza (ESP) 6 065

4. Elina Svitolina (UKR) 5 630

5. Jelena Ostapenko (LAT) 5 307

6. Karolina Pliskova (CZE) 4 730

7. Caroline Garcia (FRA) 4 615

8. Venus Williams (USA) 4 276

9. Sloane Stephens (USA) 3 938

10. Petra Kvitova (CZE) 3 271

11. Julia Gorges (GER) 2 980

12. Angelique Kerber (GER) 2 971

13. Madison Keys (USA) 2 722

14. Darya Kasatkina (RUS) 2 570

15. Anastasija Sevastova (LAT) 2 545

16. Coco Vandeweghe (USA) 2 488

17. Elise Mertens (BEL) 2 420

18. Magdalena Rybarikova (SVK) 2 350

19. Ashleigh Barty (AUS) 2 318

20. Kristina Mladenovic (FRA) 2 280