Radwanska takes third place in world rankings

Serena Williams, who did not play in Dubai due to injury, remains well ahead atop the rankings with Australian Open champion Angelique Kerber, who is down to play in Qatar this week, her closest rival.

Agnieszka Radwanska in action against Serena Williams at the Australian Open.   -  AP

Agnieszka Radwanska is up to third place in the WTA world rankings, moving ahead of Simona Halep, who lost points after failing to defend her title in Dubai.

The Romanian was upset in the last 16 in the Emirates as she continues to struggle for form this year.

Serena Williams, who did not play in Dubai due to injury, remains well ahead atop the rankings with Australian Open champion Angelique Kerber, who is down to play in Qatar this week, her closest rival.

WTA Top 20:

1. Serena Williams (USA) 9,245 pts

2. Angelique Kerber (GER) 5,700

3. Agnieszka Radwanska (POL) 5,210 (+1)

4. Simona Halep (ROM) 4,745 (-1)

5. Garbine Muguruza (ESP) 4,642

6. Maria Sharapova (RUS) 3,672

7. Belinda Bencic (SUI) 3,505 (+2)

8. Petra Kvitova (CZE) 3,478

9. Flavia Pennetta (ITA) 3,422 (-2)

10. Roberta Vinci (ITA) 3,325 (+3)

11. Carla Suarez Navarro (ESP) 3,300

12. Lucie Safarova (CZE) 3,292 (-2)

13. Venus Williams (USA) 3,266 (-1)

14. Viktoria Azarenka (BLR) 2,935 (+1)

15. Timea Bacsinszky (SUI) 2,894 (+1)

16. Ana Ivanovic (SRB) 2,640 (+1)

17. Sara Errani (ITA) 2,595 (+5)

18. Elina Svitolina (UKR) 2,530 (+3)

19. Karolina Pliskova (CZE) 2,525 (-5)

20. Jelena Jankovic (SRB) 2,505