Total earnings: $71.5 million Prize money: $6.5 million Endorsements: $65 million Federer cleaned up with an exhibition tour of South America in December that netted him $14 million for six matches. The 32-year-old Swiss native boasts ten endorsement partners including Nike, Rolex, Wilson, Moet & Chandon and Credit Suisse. His career prize money is a record $78 million.

Total earnings: $29 million Prize money: $6 million Endorsements: $23 million Sharapova completed the career Grand Slam when she won the 2012 French Open. The win triggered lucrative bonuses with sponsors Nike and Head. She launched her own candy line, Sugarpova, last year and plans to sell accessories under the brand starting this fall.

Total earnings: $26.9 million Prize money: $12.9 million Endorsements: $14 million Djokovic has reached the finals of nine of the last dozen Grand Slam tournaments, including five victories. He won a record $12.6 million in prize money in 2011 and topped the figure in 2012 with $12.8 million. Most top players have a apparel/shoe deal with one brand, but Djokovic added Adidas as a sponsor in April to go with his clothing sponsor Uniqlo.

Total earnings: $26.4 million Prize money: $5.4 million Endorsements: $21 million A knee injury knocked Rafa out of action for seven months last year, but he returned in 2013 to lead the men's tour in prize money with $6.8 million. He left IMG in December to start his own management company with his father and manager. Major sponsors include Nike, Babolat, Kia Motors and Bacardi.

Total earnings: $20.5 million Prize money: $8.5 million Endorsements: $12 million Williams regained the No. 1 ranking in the world in February for the sixth time in her decorated career. She has racked up 15 tournament victories since the start of 2011. Her $47 million in career prize money is 65% more than second ranked Venus Williams. Nike, Wilson, Gatorade and OPI have endorsement deals with Williams and she holds equity deals with HSN, Sleep Sheets, Mission and the Miami Dolphins.

Total earnings: $18.2 million Prize money: $3.2 million Endorsements: $15 million Li's 2011 French Open win made her the first Asian-born tennis player ever to win a Grand Slam singles event. China's top player capitalized on the new found fame by signing seven multimillion-dollar endorsement deals after the historic win. She shills for Babolat, Nike, Rolex, Samsung and Mercedes, as well as multiple Chinese companies.

Total earnings: $15.7 million Prize money: $6.7 million Endorsements: $9 million Azarenka set a record for single season prize money in 2012 with $7.9 million. She added a second straight Australian Open in January and current ranks No. 2 in the world. Endorsement partners include Nike, Wilson, American Express, Citizen Watch and Red Bull, which made her the first tennis player sponsor for the beverage giant with a deal signed in January.

Total earnings: $14.9 million Prize money: $6.9 million Endorsements: $8 million The 26-year old Scot ended Britain's 77 year wait for a homegrown champion at Wimbledon in July. Murray earned $2.4 million in prize money with the win and set himself up for millions more from appearances and endorsements with the victory. Current partners include Adidas, Head and Royal Bank of Scotland. His $30 million in career winnings are sixth most all-time.