2 Part Lesson — Marcelo plays a Keylock from Mount to open up an Armbar or even the Back: [I] Force your opponent to expose the space under his arm for the Armlock by pinning his opposite forearm to the mat, causing him to reach across and rescue his shoulder from the Americana. Place all of your weight behind is elbow and close around his shoulder, gathering up both arms before sitting back for the Armbar. [II] If the opponent turns onto his side as he rescues his arm from the Americana, pop his shoulder across with your hand and place your chest behind his back for the Seatbelt. Once your hands are clasped, pull him back to set your hooks and finish with the choke.