Pascual Nicolás Pérez was an Argentine flyweight boxer. Pérez was born in Tupungato in the Mendoza Province of Argentina, he went on to make history by becoming Argentina's first world boxing champion.

A knockout is a fight-ending, winning criterion in several full-contact combat sports, such as boxing, kickboxing, muay thai, mixed martial arts, karate, some forms of taekwondo and other sports involving striking, as well as fighting-based video games. A full knockout is considered any legal strike or combination thereof that renders an opponent unable to continue fighting.