No. 1 Simona Halep retained the top spot even though she became the first No. 1 seed to lose in the first round of the U.S. Open, and Caroline Wozniacki stayed at No. 2 after her second-round exit. Angelique Kerber went from No. 4 to No. 3.

Naomi Osaka jumped 12 places to a career-high No. 7 in the WTA standings thanks to her first Grand Slam title. The runner-up, Serena Williams, is back in the top 20 at No. 16, after being No. 26 before the U.S. Open _ and outside the top 400 as recently as May, following the former No. 1’s time away because she had a baby.

WTA singles rankings as of 10 September, 2018

1. Simona Halep (Rom)

2. Caroline Wozniacki (Den)

3. Angelique Kerber (Ger)

4. Caroline Garcia (Fra)

5. Petra Kvitova (Cze)

6. Elina Svitolina (Ukr)

7. Naomi Osaka (Jpn)

8. Karolina Pliskova (Cze)

9. Sloane Stephens (US)

10. Jelena Ostapenko (Lat)

11. Julia Goerges (Ger)

12. Kiki Bertens (Ned)

13. Daria Kasatkina (Rus)

14. Garbine Muguruza (Spa)

15. Elise Mertens (Bel)

16. Serena Williams (US)

17. Ashleigh Barty (Aus)

18. Madison Keys (US)

19. Anastasija Sevastova (Lat)

20. Aryna Sabalenka (Blr)