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19 ore fa · Michael Duane Johnson (born September 13, 1967) is an American retired sprinter who won four Olympic gold medals and eight World Championships gold medals in the span of his career. [2] He held the world and Olympic records in the 200 m and 400 m, as well as the world record in the indoor 400 m. He also once held the world's best time in the 300 m.
