Track and field stars of the 2012 Olympics
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David Lekuta Rudisha (right), of Kenya, runs ahead of Puerto Rico's Wesley Vazquez. Rudisha shattered his own world record in the fastest ever 800m race.
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Lolo Jones of the U.S. clears a hurdle with Canada's Phylicia George. Jones is the American record holder in the 60m hurdles with a time of 7.72. She came in fourth in the 100m hurdles final in London.
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Aries Merritt of the U.S. celebrates after winning gold in the men's 110m hurdles final.