Who was the male runner in the 2000 Olympics who was disqualified before the start of the race for starting too fast twice but did not actually start before the gun?

The male runner disqualified before the start of the race at the 2000 Olympics was Derek Redmond. He was set to compete in the 400 meters but was disqualified for false starts when he reacted too quickly to the starting gun. However, Redmond later contested that he did not actually start running before the gun, leading to controversy surrounding his disqualification.