Yea tell me about it
You know, Fedor might have a suspect chin. The fights hes had against top level guys, he never really took a clean punch to the face. Nogiera has good standup but hes no KO threat and while crocop was a great striker, his strength wasnt in the hands, but more in the kick and he never landed it clean on Fedors dome. He didnt let silvia even throw a punch.
If you can find the fight with fedor and fujita, you can clearly see that fedor was KOed on his feet for a brief moment from a wild punch to the face. He even took some time to recover from it.
If Andrei can let his hands fly without taking a big shot to the chin himself, I can see him KOing Fedor.