That’s it Seamus, I ain’t keen on anointing Duran the GOAT H2H there or whatever is in vouge, JCC would have a lively debate for the crown if they met at or around that weight.
Mayweather probably lost to Castillo in their 1st fight and Castillo was Chavez's sparring partner. The master does one better than his student and takes the decision. Chavez also didn't have a problem with the shoulder roll style as you see when he destroyed Roger Mayweather.