6. Lance Armstrong
Armstrong put cycling on the map but also ruined the sport’s reputation. The American star won the Tour de France an incredible seven consecutive times. This included a victory after he recovered from cancer. However, World Cycling stripped him of all his accolades after one of the most shocking doping scandals ever. This was systemic cheating at the highest level and Armstrong was in the middle of it.

It wasn’t even a case of Armstrong cheating by himself. A court proved that he bullied teammates into using PEDs as well. In the end, he confessed to cheating and lost out on over $150 million. Furthermore, his reputation as one of the sports’ shadiest figures was embedded in stone. This scandal transcended cycling because he was a global figure. In the end, he became a figure of embarrassment.