Johnson is the only male athlete in history to win both the 200 metres and 400 metres events at the same Olympics, a feat he accomplished at the 1996 Summer Olympics in Atlanta. Johnson is also the only man to successfully defend his Olympic title in the 400 m, having done so at the 2000 Summer Olympics in Sydney. Aside from his Olympic success, Johnson accumulated eight gold medals at the World Championships and is tied with Carl Lewis for the fourth most gold medals won by a runner.