Second this. That left-hand was thrown with speed and power and Joe wouldn't see it until he was looking up from being knocked down. That left-hand was one of the most damaging punches in the lightheavy division at one time.
It's never fair to say Prime anyone. Prime Stevenson was able to go bouts without getting hit really and landed all the power. Stevenson that fought Badou Jack vs Smith would be more interesting. Stevenson on forums until the end everyone said he could get knocked out at any time by non punchers and then Gvosyk landed about 20 unanswered knockout shots to put him down, I feel Stevenson having a bad chin was talked about more than the likes of Amir Khan.