U.S. sprinter Tyson Gay

Associated Press
FILE - In this Aug. 4, 2012, file photo, Tyson Gay competes in a men's 100-meter heat at the 2012 Summer Olympics in London. After several years hampered by injuries, Gay knows he needs to hold back in practice if he wants to stay healthy. His newfound philosophy is looking good after Gay put up a fast time Saturday, May 4, 2013, in his first 100-meter race of the season. He won in Jamaica in 9.86 seconds, the best mark so far in the world this year and an impressive one for early May. (AP Photo/Anja Niedringhaus, File)

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After a lackluster performance at the 2008 Beijing Olympics, American sprinter Tyson Gay will be looking for redemption on the track at the London Games. -- By Armando Botello II

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