Paris - Romanian Mihaela Buzarnescu continued her remarkable rise by breaking into the WTA Tour's top 20 for the first time on Monday after winning her maiden Tour title in San Jose.
The 30-year-old left-hander was ranked outside the world's top 500 at the last start of last season, but beat Greek Maria Sakkari on Sunday after losing her first two WTA Tour finals earlier this year in Hobart and Prague.
Her compatriot and French Open champion Simona Halep maintained her healthy lead as world number one, while 23-time Grand Slam champion Serena Williams stayed 26th after her embarrassing 6-1, 6-0 thrashing by Johanna Konta in the San Jose first round.
Latest Top 20 in the WTA Tour rankings:
1. Simona Halep (ROU) 7 511
2. Caroline Wozniacki (DEN) 6 660
3. Sloane Stephens (USA) 5 492
4. Angelique Kerber (GER) 5 305
5. Elina Svitolina (UKR) 5 020
6. Caroline Garcia (FRA) 4 680
7. Garbine Muguruza (ESP) 4 535
8. Petra Kvitova (CZE) 4 505
9. Karolina Pliskova (CZE) 4 485
10. Julia Goerges (GER) 3 900
11. Jelena Ostapenko (LAT) 3 787
12. Daria Kasatkina (RUS) 3 525
13. Madison Keys (USA) 3 127
14. Venus Williams (USA) 2 901
15. Elise Mertens (BEL) 2 830
16. Ashleigh Barty (AUS) 2 555
17. Naomi Osaka (JPN) 2 350
18. Kiki Bertens (NED) 2 231
19. Anastasija Sevastova (LAT) 2 165
20. Mihaela Buzarnescu (ROU) 2 068
Selected:
26. Serena Williams (USA) 1 616