See, that's how you do it.
Anyone, for those who saw the fight, did you see what happened?
Sanders hit him with a left hook, that left hook sent Wlad's head into Sander's head. That's what caused the cut and Wlad's downfall. Totally unintentional, things like this happen against south paws, but as the commentators are talking about the left hook, it wasn't the punch. It was the head to head contact that did it.