McCallum does what Hearns couldn't do TWICE!! Barkley gets throughly beaten up but goes the distance IMO.
I think it'd be a miracle if he did Tommy was basically one good body shot away from leaving Barkley crumpled on the canvas when Barkley landed a lucky haymaker McCallum was an absurd bodypuncher... He'd brutalize Iran
Anyway...y'all put too much emphasis on size. Barkley wont beat Floyd JUST because he's a huge Middleweight. The difference in skills between the two fighters is a vast GULF, so vast in fact that in nullifies the difference in size. The only thing to consider is if Floyd cannot move effectively at 160lbs, which is possible. But Assuming that Floyd comes in no higher than 150lbs and can still move and be quick...Barkley doesn't win a single round. Not even one. Dude Floyd is 1000x the fighter Barkley ever was and the size difference was smaller than Dempsey-Willard and Louis-Carnera...and we know how those fights turned out..... But we digress Cdogg (and YOU brought Floyd into this ::)...back to McCallum, Barkley and Biz Markie.
