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Justin Gatlin was born on February 10, 1982 in Brooklyn, New York. He is an American sprinter who specializes in the 100 and 200 meters. Gatlin won the 100 meters at the 2004 Summer Olympics in Athens, Greece, but was later stripped of the title after testing positive for a banned substance. He returned to the track in 2010 and has since won three world championships in the 100 meters.