13. VICTORIA AZARENKA (TENNIS) – $15 MILLION
She is a Belarusian tennis player who is currently ranked as number six in the world. She is the only Belarusian player to win a Grand Slam singles title. She is also a gold medal Olympian in mixed doubles. She has won two Australian Open singles titles, the bronze medal at the 2012 Olympics and two mixed doubles Grand Slam titles.