Closed Guard | Stack Pass | Double Under

Combining the stack pass with a double under pass against a flexible opponent:

1. Begin by grabbing the opponent's knee, pushing it down, and initiating the stack pass.
2. Secure a grip on the collar and start to get inside, but if the opponent blocks, pinch your knee to control their leg.
3. Release the grip on the knee and start to go under the opponent's leg, cupping their hips instead of reaching for the collar.
4. Close your elbow and start to square up with your opponent, ensuring their hips are over your lap and staying on your toes.
5. Open the lapel with the grip on the hips, reach for the collar, and close your elbow to secure the grip.
6. Use your thumb to hook the lapel, open it, and grab the other side, then close your elbow again.
7. Keep the opponent's hips over your lap and use your knees to make them go upside down, posting their legs on the mat.
8. Keep your chest down and apply pressure on the hips, using your toes and knees to drive their legs towards the mat.
9. As you walk your knees, bring one knee in the middle of their back and post your leg like a knee on belly, keeping your elbows closed.
10. Move your head to the side you posted your leg, driving your shoulder down and using your head to drive the opponent.
11. As you drive, slide your knee under the opponent, maintain the lapel grip, and hug their head with your free hand.
12. Adjust your position, release the lapel grip, and control the hips to stabilize the position.