Paris - End-of year world number one Simona Halep topped the latest WTA Tour rankings released on Monday with Caroline Wozniacki up three places into third after the Dane's WTA Finals success in Singapore.
Halep became the 13th year-end women's number one despite struggling at the WTA Finals winning just once to bow out at the round-robin stage.
The Romanian reached the top ranking for the first time earlier this month and narrowly held on when world number three Karolina Pliskova lost her semi-final in Singapore.
Former world number one Wozniacki beat Venus Williams 6-4, 6-4 in Sunday's final.
Latest WTA Tour rankings
1. Simona Halep (ROM) 6 175
2. Garbine Muguruza (ESP) 6 135
3. Caroline Wozniacki (DEN) 6 015
4. Karolina Pliskova (CZE) 5 730
5. Venus Williams (USA) 5 597
6. Elina Svitolina (UKR) 5 500
7. Jelena Ostapenko (LAT) 5 010
8. Caroline Garcia (FRA) 4 420
9. Johanna Konta (GBR) 3 610
10. Kristina Mladenovic (FRA) 2 885
11. Svetlana Kuznetsova (RUS) 2 856
12. Coco Vandeweghe (USA) 2 819
13. Sloane Stephens (USA) 2 722
14. Anastasia Pavlyuchenkova (RUS) 2 425
15. Anastasija Sevastova (LAT) 2 295
16. Madison Keys (USA) 2 213
17. Elena Vesnina (RUS) 2 195
18. Julia Goerges (GER) 2 060
19. Angelique Kerber (GER) 2 042
20. Ashleigh Barty (AUS) 2 031