Roger by KO. Floyd Sr. was barely world class. The Black Mamba would shut Floyd's big mouth just like Leonard did.
Floyd SR. was naturally bigger. Roger didn't go up to 147 until he was past prime. Let's say prime 140 lb Roger adds a few pounds and fights prime 147 lb Floyd. I'd go with Roger by decision. Neither would hurt the other.
I would pick Roger but not by KO. Roger did not have big power above 140 lbs. He certainly wouldn't hit as hard as Leonard. Floyd twice went the distance with a prime Marlon Starling. He was a decent fringr contender type.
I'll pick Floyd Sr. He showed good skills and quickness against Leonard. Not much power though. If he brings that same fight I think he outboxed Roger. Roger had good boxing skills and a good reach at 130-40lbs. @147 that no longer exists. Roger didn't have the best chin. IDK if Floyd Sr. Can stop him but it's a possibilty.
