That's Boxing though ain't it Brock. Personally I don't rate Marciano. Never have. Moore and Walcott were both past their best and they still put him on his arse. He had 40 odd fights against not great fighters before finally fighting for the title in his 43rd fight. Look at the records of a lot of the guys to face him. He stopped fighting at 32? and yet still most people have him in their top ten. Great heart but ATG? I am not so sure. I believe there are a heap of heavyweights who could have beaten him from different eras but that is just supposition and opinion on my part. It's what makes the fight game so great.