Chavez Sr was a double tough sonovabytch that was more than willing to fight anyone. He had an incredibly long prime, power in both hands, an a iron chin. The vile crooks at the WBC were so proud of him and his Mexican heretige they ripped the WBC 160lb belt from an established champion (Martinez) and gave it to Chavezs kid!
With all that said, Chavez Sr GOAT? Probably not top 20 and definitly not top 10