Michael Johnson made his Olympic debut in 1992, winning the 4x400m relay along with his teammates. At the 1996 Games, he became the only man... in history to win the 200m and the 400m gold medals at a single Olympics, setting world record times in both events (19.32 in the 200m and 43.49 in the 400m). In Sidney 2000, he defended his 400m Olympic title, becoming the 1st athlete to capture 2 consecutive 400m gold medals. Michael Johnson (USA) - Athletics - Barcelona 1992, Atlanta 1996, Sydney 2000