Victoria Azarenka
Earnings: $7.2 million
2011 ranking: 9
2011 earning: $6 million
The 22-year-old from Belarus is currently the No. 1 ranked player in the world. She earned $6.7 million in prize money over the past 12-months, which was tops on the WTA Tour. Azarenka's new deal with Nike kicked off this year with a huge pay increase.