That fight could have gone either way it could have been Ali-Liston or it could have been Foster-Frazier.

RJJ wasn't a spectacular heavyweight, but at that point in time Mike Tyson wasn't any great shakes either, he had head movement from time to time but threw 1 big bomb after another and it's doubtful that he would have caught Roy with one but on the off chance he did the fight would have been over shortly thereafter