19. Martina Navratilova – $15 Million
Retired American and Czech professional tennis player Martina Navratilova now days coaches tennis. Navratilova is considered to be one of the best tennis players of all time, being ranked number one of 332 weeks as singles player and 237 as doubles and winning 109 consecutive matches. Navratilova has net worth of $15 million. She won stunning 18 Grand Slam singles titles, 31 doubles titles and 10 mixed doubles titles.