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Justin Gatlin is a professional track and field sprinter who has competed in the 60 meters, 100 meters, and 200 meters. He is a former world record holder in the 100 meters, and he has won the Olympic gold medal in the 100 meters twice, in 2004 and 2012. He has also won the world championship in the 100 meters three times, in 2005, 2007, and 2013.