Rafael Nadal

Nadal had a monster 2013 season where he went 75-7 and finished ranked No. 1 in the world. He won two Grand Slams (French Open, U.S. Open) and was runner-up at Australia in January 2014. He added a ninth French Open title in June and is now 66-1 all time at Roland Garros.

 The wins and top year-end ranking kicked in bonuses from sponsors in addition to the $14.5 million in prize money he earned between June 2013 and June 2014. Nadal's biggest endorsement partner is Nike where his earnings are heavily tied to his year-end rank. Other current sponsors include Babolat, Mapfre, Banc Sabadell Atlantico, Richard Mille, Kia Motors, Mueller and Poker Stars.