who is michael johnson
For other people named Michael Johnson, see Michael Johnson (disambiguation). Michael Duane Johnson (born September 13, 1967) is a retired American sprinter. He won four Olympic gold medals and eight World Championships gold medals. He formerly 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 held the world's best time at the 300 m.