10 Lance Armstrong
You know the story. Survived testicular cancer. Won a record seven Tour de France titles. Started the Lance Armstrong Foundation, which has raised more than $470 million for cancer research. Then the U.S. Anti-Doping Agency announced it was banning him for life and stripping him of his TDF wins for using steroids and blood doping. For millions of people around the world, he’s still a hero. But officially, he’s also now a cheater.