From the butterfly guard, Robson takes his opponent's lapel out, and then his opponent swims his arm to get the underhook and tries to flatten him out. Posting on his elbow, Robson lassos the lapel around his opponent's neck, and reaches over the back to grab the belt. He uses his hook to sweep, and passes to the side. His free arm goes underneath the armpit and he feeds the lapel to his other hand. Now he grabs the lapel with his free hand, thumb in, and finishes the choke.