Marciano = Calzaghe?

calzaghe best victory = almost 40 RJJ and 43 years old hopkins

not even close

 

In my book, both are ATG's. 49-0 vs 46-0 would be an advantage to Marciano except he only fought 6-7 title fights in 4-5 years. Calzaghe fought 20+ title fights in 12 years.

The most interesting comparison to me is they both had very unusual ladders of succes. Marciano took up boxing late, had only a handful of amatuer fights and had his first pro fight when he was 24! Calzaghe was trained by an amatuer (his dad) and developed unorthodox skills. Both these fighters somehow used these 'disadvantages' of preparation to retire undefeated.

 

would be interesting to see the classic's take on this.

 

One thing is obvious:

Marciano - 49 - 0 - 0
Calzaghe - 46 - 0 - 0

.....

Valuev 50 - 2 - 0

....

Mayweather - 40 - 0 - 0