Mario Sperry demonstrates a Clock Choke on his training partner in this Gameness Brazilian Jiu-Jitsu Instructional Video. This choke is done using your opponent’s gi lapel, and is carried out while he/she is in the turtle position.
The Clock Choke is set up when your opponent is in a defensive, turtle position on his elbows and knees. The most important task you have at this time is to prevent him/her from moving or getting out of that position and placing you in guard before you have a chance to attack. This can be done by keeping constant pressure on your opponent’s back and sides.
With your far arm across your opponent’s back, loosen his/her lapel to give your other hand plenty of slack to grab onto. Grab your opponent’s gi lapel with your opposite arm bent in a 90 degree angle for maximum control and strength. Your arm should be across your opponent’s neck at this time.
With one arm securely holding the gi lapel, reach for and grab the other lapel with your far hand, under your opponents arm. This will form a “seatbelt” with your arms with one arm grabbing the lapel across the throat of your opponent, and one arm grabbing the opposite lapel under his/her far arm.
At this time, dive forward to bring your armpit into the back of your opponent’s head while at the same time, stepping forward with your lead leg. In this position, your head should be in contact with the mat, and most of your weight should be located across the top of your opponent’s back, pushing his/her head downward and into the choke.
You may be close to getting a tap out already, but to increase the tightness of the submission and to finish the Clock Choke, keep your head in the same place on the mat, but sit-out with your rear leg, moving it in front of the other. This movement will resemble the rotation of the hands of a clock, and will twist your opponent’s lapel into his/her carotid arteries.
If you still do not achieve the tap, you can continue to smoothly rotate around your opponent’s head to increase the tension of the choke. Eventually, he/she will have no choice but to either submit to the choke, or lose consciousness.