No. 9 Jennifer Capriati After turning pro at age 13 in 1990 and reaching the final of the first tournament she entered, Capriati became the brightest young star in tennis. But by 1994 the pressures of fame had worn her down, and off-court problems -- including arrests for marijuana possession and shoplifting -- effectively ended her career. She began a slow comeback in 1996 and after a few years rediscovered her game. Capriati stunned the tennis world by winning the both Australian Open and French Open titles in 2001 and ascending to No. 1 in the world rankings.