About Michael Johnson
Michael Duane Johnson (born September 13, 1967 in Dallas, Texas) is a retired United States sprinter. He won four Olympic gold medals and was crowned world champion nine times. Johnson currently holds the world record in the 400 m and 4 x 400 m relay and formerly held the world record in the 200 m and Indoor 400 m. His 200 m time of 19.32 at the Atlanta Olympics stood as a record for over 12 years.
from Wikipedia
