U had to be confident to face this as a WW...GSP was a goat-level fighter, but he always seemed to fight out of a fear losing, he never had that "I am god" swagger. BJ had it, I thought he could take anybody who was even close to his weight in his prime. It's a major reason why he has his reputation.
Fedor would go anywhere with anyone until he got old and it got him tapped/KO'd.
If you count delusion as confidence, there are quite a few people who we know would fit too.
There for a couple years he seemed to approach Mayweather levels of confidence.Anderson.
Cyborg cut Her hair?
Come on, it’s obviously Conor.
Mcgregor pre-nate, since that whooping he seems to be trying to talk himself up more than it coming natural to him.