Recent events suggest Graham Earl is beyond shot-to-bits and shouldn't be fighting anymore. Napa would have KO'd him in 1 too.

As for Katsidis - don't think he's ever been a one punch "lights-out" hitter. But even if he was early doors, big punchers have to have the skill to land. Up in class it's obviously much harder to land as frequent and clean, plus the fighters you are hitting will normally have stronger chins, so you wont see as many one punch KO's