There wont be early knockouts. Light boxers go a long way before giving up. Heavywieght boxing ndio za one punch and the game is over. Mike Tyson knocked out Michael Spinks, an undefeated fighter in one and half minutes. The fight was just like a mayweather-pacman match. In more recent times, Tyson knocked out Clifford Ettienne in 49 seconds. knocking out a seasoned heavyweight boxer in seconds is just an outstanding performance, for all time. However, the dude started doing powder and getting indisciplined and that put him down. Tyson had this psychological war style. He would make sure he gave a boxer a blow he had never taken in the whole boxing career in the openning moments when they are jumpig about the ring sizing up each other. And thats it, the opponent would be psyched out if he survived the blow and would spend the rest of the time cowering.