I Think AJ got a few rounds in the beginning where Vlad was trying to feel him out. Then the knock down punctuated it. Aj wore himself out trying to close and looked like he was going to drop from exhaustion. (Carrying that much bulk around with you and swinging big wears you out) Vlad poured it on .. So i thought 10-9 AJ for that round. After that Aj took a few rounds off where he stalked but only threw in flurrying counter opportunities because you could tell he was was trying to get his wind back (hence the spitting of the mouthpiece). Finally he got his second wind and Vlad was starting to slide because of him being worn out. From there it was only a matter of time , Aj throws in combos and Vlad was going straight back with his lead arm extended looking for a lazy clinch.