Before the Australian Open final the WTA live ranking look like this:
1. Serena Williams
2. Victoria Azarenka
3. Na Li
5870 (before her final vs Dominika Cibulkova; if she wins, her ranking points will be 6570, 11 points less than Vika)
4. Agnieszka Radwanska
5. Maria Sharapova
6. Petra Kvitova
7. Sara Errani
8. Jelena Jankovic
9. Angelique Kerber
10. Simona Halep
11. Caroline Wozniacki
12. Ana Ivanovic
13. Dominika Cibulkova
3056 (before her final vs Na Li; if she wins, her ranking points will be 3756, 4 points less than Simona)
Top 6 Players' ranking points to defend after Australian Open and before Roland Garros.
: Doha (620), Dubai (0), Indian Wells (0), Miami (1000), Charleston (470), Madrid (1000), Rome (900); Serena won't play in Dubai and Indian Wells.
: Doha (900), Dubai (0), Indian Wells (250), Miami (0), Madrid (80), Rome (620); Vika won't play in Dubai, but she should play in Monterrey (max 280 pts) after Miami.
: Doha (0), Dubai (0), Indian Wells (0), Miami (250), Stuttgart (320), Madrid (5), Rome (125); Na won't play in Dubai.
: Doha (395), Dubai (120), Indian Wells (140), Miami (450),Rome (1).
: Doha (395), Indian Wells (1000), Miami (700), Stuttgart (470), Madrid (700), Rome (225); Masha should play in Paris indoors, but she should be in Winter Olympics during Doha and Dubai.
: Paris (120), Doha (225), Dubai (470), Indian Wells (250), Miami (80), Stuttgart (120), Madrid (80), Rome (
I think it is very hard to predict what may happen after Australian Open, because the ranked players between #2 and #5 are so close to each other. Besides those recent results have clearly emphasized how unpredictable tennis can be. Serena and Maria have most points to defend, and Na least.
As we know Vika has also very little to defend after Doha and before Rome because of her injuries in 2013. If Vika find her game, she will have good chances to gain points in forthcoming tournaments after Doha. Na Li gets very close to her, if she wins the title in Melbourne, but nobody knows yet what Dominika Cibulkova will do in the final.