For the sake of the Thread.. Let's say everyone was at fault except for Mayweather on the opponents he hasn't faced... With that being said the end result is still the same... There are a lot of names that he never faced and when discussing an ATG, we have to look at the big picture. He most likely would've beaten them all, but it didn't happen that way. In his era, probably the best - But not for All Time. Too many question marks.