The most dangerous punches in boxing history often create indelible memories.
Who will ever forget Mike Tyson's devastating uppercut, Joe Frazier's lethal left hook or Rocky Marciano's overpowering right hand?
Much like Muhammad Ali's snapping jab, such dangerous punches can sap an opponent's will.
Deciding whose punch is the most devastating in history involves a mostly subjective debate and not a litany of facts. While heavyweights often have the advantage when judging punching power, I included lighter-weight fighters who had reputations for turning out the lights on their opponents.