Take a look at these athletes who have fallen from grace.
Nicknamed the "Blade Runner," Oscar Pistorius made history when he became the first Paralympian to compete in the able-bodied Olympics in London in 2012. In September 2014, a judge found Pistorius guilty of culpable homicide, the South African term for unintentionally -- but unlawfully -- killing a person. He was cleared of murder in the killing of his girlfriend, Reeva Steenkamp. Take a look at some of the other athletes who have fallen from grace.
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