I don't understand what is so hard to understand that Robinson wasn't a welter like it is today. He didn't rehydrate to 160. The time he lost to LaMotta, he weighed 144 while LaMotta weighed 160. He weighed in the same day. Floyd now, probably walked around at the same weight as a prime Robinson.

I could be wrong but somebody prove that Robinson walked around at 160 or so in between fights. He even said that he could have made 135 which shows that he wasn't that big.