Russia\'s Maria Sharapova, winner of the silver medal at the London Olympics, moved up one place to world number two in the latest WTA rankings released on Monday. Belarussian Victoria Azarenka, winner of bronze in London, holds the world number one ranking, as Poland\'s Agnieszka Radwanska paid the price for her first round defeat as she fell one spot to world number three. Olympic champion Serena Williams, winner of the singles gold and the doubles with sister Venus, has moved closer to the leading trio. Williams is less than 800 points off the top spot which she hasn\'t held since October 2010. Rankings 1. Victoria Azarenka (BLR) 8820 pts 2. Maria Sharapova (RUS) 8720 (+1) 3. Agnieszka Radwanska (POL) 8260 (-1) 4. Serena Williams (USA) 8045 5. Samantha Stosur (AUS) 6195 6. Petra Kvitova (CZE) 5275 7. Angelique Kerber (GER) 5225 8. Caroline Wozniacki (DEN) 4206 9. Sara Errani (ITA) 3620 10. Marion Bartoli (FRA) 3400 11. Li Na (CHN) 3245 12. Ana Ivanovic (SRB) 3085 13. Dominika Cibulkova (SVK) 2945 (+1) 14. Maria Kirilenko (RUS) 2835 (+1) 15. Vera Zvonareva (RUS) 2800 (-2) 16. Kaia Kanepi (EST) 2514 17. Flavia Pennetta (ITA) 2270 (+2) 18. Jelena Jankovic (SRB) 2220 19. Sabine Lisicki (GER) 2142 (+1) 20. Andrea Petkovic (GER) 2060 (-3)