Chatgpt gave a prediction. It favors Patterson slightly by UD. I understand that Johnson, the light heavyweight champion in 1961 was trying to use his victory over Eddie Machen to get a title shot against Floyd Patterson that year. Would have rather for Patterson to fight Johnson rather than McNeely. For a 1961 version of both men, I’d make Floyd Patterson a slight favorite over Harold Johnson, but it would be a very technical, competitive fight. Johnson was in excellent form in 1961. He beat heavyweight contender Eddie Machen at 181 pounds, with the AP reportedly scoring it 7–3 for Johnson, and he was also the NBA light-heavyweight champion that year. � Patterson, meanwhile, was the reigning heavyweight champion; in 1961 he stopped Ingemar Johansson in their third fight and later stopped Tom McNeeley. � BoxRec +1 BoxRec +1 Stylistically, Johnson presents Patterson with problems. He had the jab, economical defense, timing, and patience to keep Patterson from simply swarming him. Patterson's peek-a-boo attacks could leave openings for Johnson's straight punches, and Johnson had already demonstrated that he could successfully box legitimate heavyweights. But Patterson has some advantages that Machen didn't exploit as effectively: much faster combination punching, explosive closing speed, and considerably better punching power. Patterson could go from outside range to a four- or five-punch combination extremely quickly. Johnson would probably have difficulty keeping him at the end of the jab for an entire 15 rounds. I also don't think the approximately 180-pound Johnson would be overwhelmed physically. Patterson himself was a relatively small heavyweight—he weighed 188 against McNeeley in December 1961—so this isn't Johnson facing a 215–220-pound heavyweight. � BoxRec My prediction Patterson 55–60 / Johnson 40–45. Most likely: Patterson wins a close 15-round decision, perhaps 8–7 or 9–6. Johnson winning a decision wouldn't surprise me at all. If he consistently catches Patterson coming in, controls the pace with his jab and refuses to exchange unnecessarily, he could reproduce something resembling his success against Machen. I don't particularly like a Patterson KO prediction here. Johnson was far too disciplined and defensively responsible to treat him like one of Patterson's more vulnerable challengers. And interestingly, 1961 Harold Johnson might be a tougher stylistic opponent for Patterson than quite a few actual Patterson title challengers
At that point I’d probably go with Patterson on points, but Johnson could still take it if Patterson is off his game. Prime for prime at 175lbs I’d go with Johnson, he’s more well rounded, although this is probably a slightly hot take. I believe he’d control the range and counter Patterson with precision when he commits.
Johnson was a better version of Machen. Patterson handled him good enough. Have to edge it to Patterson if each was on their best night. If they fought three times I’m sure HJ takes one of three.