Re: 1951 Joe Louis vs 1919 Jess Willard and 1923 Luis Firpo 12 rounds
Louis was way past prime in 1951 but not that past prime that he couldnt beat the crude Firpo or Willard, Firpo is too wild with his punches and Louis jab(his best tool at 1951) and left hook should be enough to take out Firpo IMO. I dont see how someone can be so wild against Louis and not end up being knocked out, even if it is 1951 Louis.
Could 51 Louis knock out 19 Willard? probably, he would take longer than Dempsey, but I still think Louis gets him, if he doesnt he wins a wild decision.