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UFC 190: Ronda Rousey KOs Bethe Correia in the first round
Los Angeles Times

Michael Johnson

Where you've seen him: He's been called "The World's Fastest Man" after setting the world record in sprinting - and holding onto it for 12 years. Why he'll be fired: He'll probably let someone else bring him down. Johnson had to return a gold medal he won in 2000 after it was revealed that all three of his teammates took performance-enhancing drugs. NBC
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