If we're talking Holmes (and Hearns for that matter), it's like stiff arming was completely legal when they entered the ring. They both did it constantly, blatantly, right in front of the refs, and the refs never did anything. Or how about Holmes shoving his forearm against opponent's faces to push past them? Mayweather did the same thing, only more often, and he was better at it. Combat sports are all a bit dirty. Just the nature of it.