Athletes compete in weight categories. For all events, there is a direct elimination system that eventually decides the two finalists for the gold medal match.
All wrestlers who lose against either finalist, at any stage of the competition up to and including the semi-finals, enter the repechage; the winners of the two repechage groups win bronze medals.
Find out more about the Greco-Roman and Freestyle Wrestling competitions at the Olympic Games on the International Olympic Committee website.
