This information was originally published on jiu-jitsu.net. It is made available on BJJ.Org by the express permission of featured contributor Gene "Aranha" Simco.
1. In this situation, Richie is in my guard & makes the mistake of posting his left leg too close to me.
2. To set up the sweep, I hug his left leg with my right arm, and hold his right arm (gripping the gi behind his tricep) with my left hand. I am using his leg to pivot my body (facing left).
3. Continuing to hold his leg and arm, I use my left leg as a counter weight (pointing it in the direction I want him to go) and kick toward his head with my right leg (underneath his arm pit).
4. Once his back is on the floor, I begin to set up the arm bar by pulling his right arm up so his elbow is above my belt line. This also makes it hard for him to quickly roll into me.
5. In this frame, I proceed with the armbar by Putting my left leg across his face, and hugging his right arm tightly against my chest.
6. To finish the Arm Lock, I lay back, hugging his arm tightly & keeping his thumb pointed up. Keep your knees tight, squeezing his arm with them & Do Not CROSS your ankles. Remember to 'pin' his head to the floor with your left leg so he can not sit up.