If you make the semifinals no matter what you are guaranteed a medal match so that's two of the four competitors in the separate 3rd place matches right away. The other spot is figured out through a consolation bracket made up of the other opponents that the finalists defeated in previous rounds. For example if Burroughs beats Tsabolov in the first round, Demirtas in the second round, and Chamizo in the semifinals Chamizo will wrestle for 3rd against the winner of a Tsabolov-Demirtas match.