Belarussian Victoria Azarenka held on to the world number one ranking after successfully defending the Australian Open 2013 title on Saturday. Meanwhile, Serena Williams climbs to world number two after a quarterfinal appearance at the Melbourne Park. Maria Sharapova drops to number three.

Here is the WTA Tour Rankings as of January 28, 2013

1. Azarenka, Victoria (BLR) – 10,325
2. Williams, Serena (USA) – 9,970
3. Sharapova, Maria (RUS) – 9,545
4. Radwanska, Agnieszka (POL) – 7,750
5. Li, Na (CHN) – 6,255
6. Kerber, Angelique (GER) – 5,695
7. Errani, Sara (ITA) – 4,605
8. Kvitova, Petra (CZE) – 4,285
9. Stosur, Samantha (AUS) – 4,230
10. Bartoli, Marion (FRA) – 3,740

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