3. Lance Armstrong
Armstrong won the Tour de France a record seven consecutive times from 1999-2005. It appeared even more remarkable considering Armstrong was diagnosed with testicular cancer in 1996. Along with his seemingly inspirational story and the titles came fame, endorsements and eventually the creation of the Livestrong foundation. But despite his success, a black cloud always hung over cycling's biggest star. The doping allegations lingered for years, and there were countless court battle and public denials. Late in 2012, Armstrong was stripped of all his titles, forced to step down from Livestrong and lost almost all his endorsements. It wasn't until 2013, eight years after his final Tour de France victory, that Armstrong admitted doping in an interview with Oprah Winfrey. (AP Photo/David Zalubowski)
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