What Luke Rockhold did was reminding of the movie Fight Club hehehe. Watch what Tyler Durden was doing to the man after his face was beaten bloody.
I forgot about this scene but it looks very similar, and maybe he watched this famous movie before and he was inspired doing this. 
Amazing moment of history, and I managed to fall asleep! I'm interested to see how Usman performs after this. Never been knocked out I believe? That can make a fighter a little more cautious going forward, and Usman wasn't much of a risk taker to begin with. Are we going to see a more wrestling dominant approach from him from now on?
There are already talks of next fight going to be rematch and bookmakers set Usman as heavy favorite.I think he learned his lesson and he won't allow mistakes happening again, but I have to give credits to Leon for that amazing kick that switched Usman light off.
Main advantage for Leon was his great coaching team, he even said after the fight how he was down but got inspired with coach speech and gave his best.