AEST 14:30, Fri Jan 18 2013
After years of furiously denying he used performance enhancing drugs to win his record seven Tour de France titles, Lance Armstrong has made a full confession to Oprah Winfrey.
In the first part of the interview that aired today, Lance admitted using many banned substances, as well as "blood doping" to help him succeed in the tough sport.
Lance's admissions were shocking, but it's not the first time athletes have been caught cheating in sport.
Here are some of the biggest sports cheating scandals.
Lance Armstrong confessed to using drugs and lying about it.