Paris - Simona Halep has secured the year-end No 1 ranking in the WTA Tour standings for the second year running.
The Romanian spent 40 weeks at No 1 in 2018, a season that saw her win three titles from a tour-leading six final appearances, amassing a 46-11 win-loss record.
This year Halep has won the Shenzhen Open, the Rogers Cup and her debut Grand Slam crown at Roland Garros.
In addition, she reached the title match at the Australian Open, in Rome and Cincinnati.
"Finishing the season as the WTA World No 1 last year was a huge honour for me," said Halep.
"To do it for a second time in 2018 feels like a special achievement, especially having also won my first Grand Slam this year. To be able to see my name again alongside the other legends who have achieved the year-end No 1 ranking makes me very proud."
Top 20 in the latest WTA Tour rankings:
1. Simona Halep (ROM) 7 421
2. Caroline Wozniacki (DEN) 6 461
3. Angelique Kerber (GER) 5 400
4. Naomi Osaka (JPN) 4 740
5. Karolina Pliskova (CZE) 4 465
6. Elina Svitolina (UKR) 4 350
7. Petra Kvitova (CZE) 4 255
8. Sloane Stephens (USA) 4 022
9. Julia Grges (GER) 3 785
10. Kiki Bertens (NED) 3 740
11. Anastasija Sevastova (LAT) 3 240
12. Caroline Garcia (FRA) 3 225
13. Garbine Muguruza (ESP) 3 225
14. Darya Kasatkina (RUS) 3 150
15. Aryna Sabalenka (BLR) 3 145
16. Elise Mertens (BEL) 3 115
17. Serena Williams (USA) 2 976
18. Jelena Ostapenko (LAT) 2 863
19. Madison Keys (USA) 2 816
20. Ashleigh Barty (AUS) 2 605