Event Format: The competition was a single elimination tournament with a special repechage tournament for the bronze medal. Athletes competed in preliminary rounds, quarterfinals, semifinals and final. The winner of the final was the Olympic Champion and the loser of the final was awarded the silver medal. Athletes who were eliminated of the two finalists participated in the repechage tournament. The winners of the two final repechage matches were awarded bronze medals.

Event facts: Men's Welterweight competition was held at the ExCel and 16 athletes participated in the event.