Mariusz Wach vs Wladimir Klitschko, Alexander Povetkin, Jarrell Miller and pretty much anybody else. That's all that needs to be said: https://upload.wikimedia.org/wikipedia/commons/8/8a/Mariusz_Wach_2014.jpg
I mentioned that fight in this thread nearly three years ago! Scroll up a little and you will see it.
Arthur Abraham vs Edison Miranda sticks in my mind. Abraham was bringing up black tar like blood after suffering a broken jaw, seriously tough hard willpower to get to the end of that fight.
The punches that both John Mugabi and Marvin Hagler took were something special. Foreman also took some really big hooks from Tommy Morrison and just walked right though.
Carmen going 30 rounds with SRR showed a truly formidable chin IMO, he wasn't no defensive wizard ! keep well.
The uppercut Mugabi landed amd the vicious beatdown Hagler gave him. I think its why Mugabo fell off after that. Those punches took a lot out of him. Out of Hagler as well. Which is why SRL who been waiting for that for years jumped on it afterwards. It was one of those fights where you can feel it hurting by watching it.
Yep that one fight broke Mugabi down and her was never the same afterward. Hagler's chin seemed fine though. Leonard was probably just waiting for Hagler to slow down and Leonard still ran from Marvin.
Mercer soaked those up like a boss. 99% would be in the Shadowrealm after that. He ate them up waited for Morrison to gas and then flatlined him. That was a pretty savage KO with Morrison clearly out. stuck in the ropes taking some humongous shots. Brutal.