There is a scene in one of the Rocky movies where after the match Apollo Creed and Rocky are waiting for the scoring of their brawl all beat up and battered, obviously both fighters gave all they had to win, and Apollo Creed says to Rocky - "Your not getting a rematch" and Rocky says "I don't want one".I love that scene. That's when you know that you left no doubt - that your opponent, win or lose, never wants to compete against you ever again. That's fighting.