Perry Hauck, a brown belt under Rey Diogo, begins with north/south control over his opponent.

He then sits through with his rear leg, placing it under his opponent's left triceps in order to keep the elbow off of the mat.

With his weight over his opponent's upper body and his back blocking his opponent's view, Perry pulls his foot in using his own hand and passes it across his opponent's stomach to mount.

Notice that he keeps his opponent's left arm trapped off of the mat throughout the switch to the mount. He is also keeping his opponent's right arm from being used by locking it away from his body with his right elbow.

Once in the mount, Perry drops his weight over the trapped arm, pinning it to his opponent's body. His opponent's flattened position with the arm trapped gives Perry easy access to the right arm. Perry pins the arm to the mat as he begins his American lock.