Professor Lucas Lepri teaches how to counter a single leg and how to finish with a collar choke. As soon as the opponent goes for the single leg, Lucas immediately counters by using his hands to break the opponent’s grip on the leg. Once the grips are broken, Lucas kicks his leg down. He then reaches over the neck to snap the opponent down. This allows Lucas to then grip the collar. He reaches for the leg as if he was going for a single leg, while still controlling the collar. This spinning motion makes the opponent flip over, where Lucas finishes with the collar choke. Lucas also shows a couple of finishing options from that position.