Athletes compete in weight categories.
The competition is run in an elimination format with double repechage. Athletes are divided into two tables (A and B), then further subdivided into groups (A1, A2, B1 and B2). An elimination system determines the winners of tables A and B, who compete in the gold medal contest.
Athletes who are defeated by one of the four eventual group winners during the initial stages enter the repechage of their respective groups. The repechage winner of A1 fights the repechage winner of A2, and the repechage winner of group B1 fights the repechage winner of B2.
The winners of the repechage table finals go on to fight the semi-final losers from the opposite tables for the two bronze medals.