I haven't seen Brook since the Spence fight. But the reason he seems shot to me is precisely because of the Spence and GGG fights. He stood in there and took shots from GGG for 5 rounds before the broken orbital bone. Took shots from ESJ for 11 rounds, and really started to get broken down around 7-8 iirc. But then he can't even go 4 with Bud? He didn't even really take much damage at all, then WAM he's outta there off that punch? Okay didn't see it, okay off balance... but man, that didn't seem like punch someone who's been in there with much heavier punchers shouldn't be able to recover from.