Ali- His resume is the best there is at heavy and is also one of the most gifted fighters ever to box.
Holmes- To me was just as good as Ali but did not have the names to beat when his era came.
Louis- Was the best of his time but the bum of the month club kinda puts his comp pretty low.
Holyfeild- A Cw that to me when in prime was a fighter that could hang with any heavyweight.
Lewis- Best resume there is behind Ali only other one that is close to him is Holyfeild thats about it.
Foreman- Smashing Joe and Norton like there were bums and also hardest hitting heavyweight.
Frasier- Was a beast and has a win over the greatest just could not get past Foreman.
Tyson- Seem to be unstoppable but his week comp and losses to top comp puts him down the list.
Marcaino- One the weakest era but Rocky got the 0 when he stopped and thats pretty impressive.
Tunney- To me him beating the most feared man of the old school fighters says a lot. Not to mention his boxing skills were very ahead of his time which is also very impressive.