After that, the International Olympic Committee led efforts to create an independent agency to set and enforce common anti-doping rules.

VOA: special.2011.04.12

Wieber, who didn't qualify for the individual all-around competition because Olympic rules limit the entrants to two per team, said it was a team win.

CNN: 'Fab Five' brings home gymnastics gold

He was stripped of those medals though for violating the Olympic rules on amateurism when it was revealed he played two years of semi-pro baseball.

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Under British Olympic Association rules, Chambers's failed drug test triggers a lifelong Olympic ban and UKA chief Davies wants that extended to all competitions.

BBC: CHOOSE A SPORT