Re: how effective would the lighter heavyweights be today?
There is a big difference between a guy like Evander Holyfield and Rocky Marciano.. Holyfield is 6'2", not 5'10". He's got the frame for bearing more muscle weight and frankly was probably genetically better suited for bulking up to begin with. He was able to ad 25 lbs of muscle, while still maintaining a reasonable degree of mobility and power. Its possible that Rocky may have been able to boost his weight from 185 to say 200, and still been effective. But it still wouldn't have been enough against a giant heavy like a Lewis or a Klit. At 220 lbs, he would have been stuck in the mud. An easy target..