Thread: Producing The Goods On Fight Night

Does anyone have any stories on fighters in history who looked dog poor in the gym but when it came to fight night usually produced the goods to win. Also looking at the flip side of this discussion is there any fighters in history who looked world class in the gym but on fight night struggled to produce the goods?

I know Roberto Duran hardly trained but he did alright for himself and Audrey Harrison had the potential to be a top 10 fighter but never really lived up to expectation