Paris - Ashleigh Barty of Australia tops the end of season women's tennis rankings released on Monday, a day after her triumph in the WTA Finals in Shenzhen, China.
With 7 851 points, Barty, who has topped the rankings since early September, eclipsed second-placed Karolína Pliskova (5 940 points) by almost 2 000 points.
Naomi Osaka (5 497) held on to third place from Simona Halep, who moved up one spot to fourth on 5 462 points.
Barty dominated Elina Svitolina in Sunday's final in Shenzhen, winning 6-4, 6-3 to collect the richest prize in women's tennis of $4.4 million.
Svitolina rose two places to sixth in the rankings while Kiki Bertens moved up one to ninth at the expense of Serena Williams who slipped to 10th spot.
Top 20 in the latest WTA Tour rankings:
1. Ashleigh Barty (AUS) 7,851 pts
2. Karolína Pliskova (CZE) 5,940
3. Naomi Osaka (JPN) 5,496
4. Simona Halep (ROU) 5,462
5. Bianca Andreescu (CAN) 5,192
6. Elina Svitolina (UKR) 5,075
7. Petra Kvitova (CZE) 4,776
8. Belinda Bencic (SUI) 4,745
9. Kiki Bertens (NED) 4,245
10. Serena Williams (USA) 3,935
11. Aryna Sabalenka (BLR) 3,120
12. Johanna Konta (GBR) 2,879
13. Madison Keys (USA) 2,767
14. Sofia Kenin (USA) 2,740
15. Petra Martic (CRO) 2,617
16. Marketa Vondroušová (CZE) 2,390
17. Elise Mertens (BEL) 2,290
18. Alison Riske (USA) 2,210
19. Donna Vekic (CRO) 2,205
20. Angelique Kerber (GER) 2,175