This question has been asked a lot but the more I think about it the more confident I am in him. Holyfield had an even thinner frame early in his career with worse defense and less power. Haye’s chin wasn’t that great and his stamina was suspect but he still made some noise at heavy. Then you have even naturally smaller guys like Byrd and Ellis being good heavyweights. I don’t think Jai beats the top guys like Usyk, Fury, or AJ but can still win against most.