Wlad hides his chin. Even if Pianeta lands a once in a life time shot, it wont be on Wlads chin. Wlad ignores his killer insinct and plays it safe keeping his chin away from any real danger. It´s not like he gets knocked out with a punch similar to what Price took from Thompson.
I figured always a chance of a torn achilles in round 1, a Hopkins-esque fake low blow DQ, a random cut, etc.