Boxing - contact sport, martial art, in which athletes deal with each other in a special punching gloves. The referee controls the fight, which lasts from 3 to 12 rounds. The victory is assigned if the opponent is knocked down and can not get up for ten seconds (KO) or if he is injured, does not allow to continue the fight (TKO). If after a set number of rounds the fight was not stopped, the winner is determined by the evaluations of judges.