Based on ranking points earned at Grand Slams in the past 12 months.
Their ACTUAL WTA ranking is provided in brackets at the end of each line.
01 Victoria Azarenka
4580 (2000 + 1400 + 900 + 280) [#1]
02 Serena Williams
4505 (2000 + 2000 + 500 + 5) [#2]
03 Maria Sharapova
4080 (2000 + 900 + 900 + 280) [#3]
04 Sara Errani
2465 (1400 + 900 + 160 + 5) [#7]

05 Agnieszka Radwanska
2340 (1400 + 500 + 280 + 160) [#4]
06 Angelique Kerber
1960 (900 + 500 + 280 + 280) [#6]
07 Li Na
1940 (1400 + 280 + 160 + 100) [#7]
08 Petra Kvitova
1780 (900 + 500 + 280 + 100) [#8]
09 Samantha Stosur
1600 (900 + 500 + 100 + 100) [#9]
10 Sloane Stephens
1500 (900 + 280 + 160 + 160) [#17]
11 Ana Ivanovic
1220 (500 + 280 + 280 + 160) [#13]
12 Maria Kirilenko
1040 (500 + 280 + 160 + 160) [#15]
13= Roberta Vinci
945 (500 + 280 + 160 + 5) [#16]
13= Yaroslava Shvedova
945 (560 + 280 + 100 + 5) [#29]
15 Marion Bartoli
860 (500 + 160 + 100 + 100) [#10]
16 Svetlana Kuznetsova
785 (500 + 280 + 5 + 0) [#50]
17= Dominika Cibulkova
765 (500 + 160 + 100 + 5) [#14]
17= Ekaterina Makarova
765 (500 + 160 + 100 + 5) [#20]
19 Varvara Lepchenko
700 (280 + 160 + 160 + 100) [#21]
20 Tamira Paszek
610 (500 + 100 + 5 + 5) [#27]
21= Nadia Petrova
605 (280 + 160 + 160 + 5) [#12]
21= Julia Goerges
605 (280 + 160 + 160 + 5) [#19]
23 Zheng Jie
580 (160 + 160 + 160 + 100) [#44]
24= Klara Zakopalova
545 (280 + 160 + 100 + 5) [#24]
24= Peng Shuai
545 (280 + 160 + 100 + 5) [#34]
26 Sabine Lisicki
515 (500 + 5 + 5 + 5) [#52]
27 Kaia Kanepi
500 (500 + 0 + 0 + 0) [#39]
28 Laura Robson
495 (280 + 160 + 50 + 5) [#43]
29= Elena Vesnina
485 (280 + 100 + 100 + 5) [#33]
29= Bojana Jovanovski
485 (280 + 100 + 100 + 5) [#38]
29= Heather Watson
485 (160 + 160 + 160 + 5) [#40]
29= Tsvetana Pironkova
485 (280 + 100 + 100 + 5) [#41]
33 Caroline Wozniacki
450 (280 + 160 + 5 + 5) [#11]
(tlfmtbbtc*) Venus Williams
365 (160 + 100 + 100 + 5) [#23]
* = too low for me to be bothered to calculate
