Former US track and field athlete who won 9 gold medals in the Los Angeles, Seoul, Barcelona, and Atlanta Olympics.
He was trained under the tutelage of his father at their family-owned athletics club.
He was ready to make his Olympic debut in 1980, but had to sit it out because of America's boycott of the games in Moscow.
He married Maria Lewis. The couple has one son.
He has been quoted as being skeptical of the abilities of Usain Bolt.