Professor Lucas Lepri shows how to escape an opponent's back attack and counter with a deep half guard sweep and pass. When the opponent threatens with one hook and the seatbelt grip, Lucas controls the opponent's choking hand, rolls, and traps the opponent in half guard with his legs. He then circles his arm underneath the opponent's leg to establish deep half guard, and when the opponent tries to come up, he bumps him forward and scoops his ankle while crossing his legs. Lucas applies the waiter sweep by gripping the lapel with his other hand and then rocking his body before toppling the opponent and coming up with his head low. He finishes the sequence with a pass by letting go of the ankle, driving the leg back, circling his foot out, and releasing the grip on the lapel before finally establishing control of the head and arm.