15 Thunderous Clashes: Sport's Most Controversial Moments that Shook the World

Lance Armstrong's Doping Scandal, 2012

Lance Armstrong, once a hero for his seven consecutive Tour de France victories and cancer survival, fell from grace in 2012 when he was stripped of all his titles due to doping allegations. The scandal shook the world of cycling and sports at large, leading to widespread discussions about doping and ethics in sports.