The punch that wobbled Lyakovich didn't look too hard. I think it was total exhaustion that did him in. he fell through the ropes on his own. He had nothing left. Strange since neither fighter threw anything of note through 9 rounds. This was a terrible fight with an exciting enexpected finish. The boos were warranted. Like one of the announcers said " The one guy acts like he's scared and the other guy acts like he's glad of it". Classic line.