Jack Johnson that is. But how would he have fared facing these White heavyweight s from different eras? All 20 rounds and Johnson era rules. Georges Carpentier? Jack Sharkey? Max Schmeling? Tommy Farr? Arturo Godoy? Joey Maxim? Ingemar Johansson?
The more modern guys may struggle a little with the ruleset of his era. Well, maybe. Johnson is a good-sized heavy with a style that was developed within his era. It's his house, so home field advantage at the least.
Well he certainly gave Louis a tough first fight, so he can definitely give Johnson one too. I wouldn't rule out Godoy taking him to a close decision loss.
I think Maxim gives him problems, to be honest. I could see Max or Info stinging him, especially Ingo if he was in shape and used his legs.