Total earnings: $7.4 million

Prize money: $4.9 million

Endorsements: $2.5 million

The 24-year-old tennis pro caused an uproar in her native Poland when she posed naked this year in ESPN The Magazine's annual "Body" issue. Radwanska has been voted the WTA's favorite player by fans each of the past two years. Her biggest endorsement is her shoe and apparel deal with Lotto.

Agnieszka Radwanska of Poland celebrates after defeating Li Na of China in their women's quarterfinal tennis match at the Wimbledon Tennis Championships, in London, July 2, 2013. [Photo/Agencies]