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. As my opponent grabs around the back of my leg, I move to the side of him, facing the same direction. I push down on his head to stop his forward momentum.
2. I grab the hand that was hooking my leg with my right arm as I continue to push his face.
3. I then roll over my left shoulder, keeping my left leg close to his body. As I roll through I continue to control the hand and pull myself up, using his belt.
4. I bring my left knee to the floor and turn my left leg in as shown. My right leg right leg posts out to help me balance and lean forward toward his left shoulder. My left arm should stay over his back to stop him from rolling forward to take pressure off his shoulder. Leaning forward and keeping his back down will create pressure on his right shoulder and complete the lock.