Corrie Sanders was a danger to anyone early in a fight, but totally useless in the later rounds because of his utterly shitty stamina Cotto fades in the later rounds Canelo fights in spurts which other talented fighters have been plagued by lack of stamina?
Nobody truly Great had bad stamina. Some fighters simply get tired. Cotto's stamina is unfairly criticized, it's natural to be a bit winded by the 11th or 12th. It's just that the very top tier seldom are.
Im not sure if it was stamina per se. But if Tyson couldnt get you out in under 3 rounds, he seemed to just take his foot off the pedal