Professor Lucas Lepri demonstrates a guard pass prevention. The technique starts with Lucas in a half guard. He breaks the opponent's grip and pushes their leg down, allowing Lucas to establish an underhook. This underhook is often baited by presenting the elbow for the opponent to push. Lucas maintains wrist control to prevent Kimura traps. By pulling the opponent in and planting a leg to prevent their backstep, Lucas forces the opponent to lose their base or give up the underhook. As the opponent reacts, Lucas lifts his leg, escaping to the back. Lucas emphasizes lifting with the underhook and transitioning smoothly to secure the back.