Wednesday nights are for the competition team. This is where I teach more advanced techniques. This week we focused on juji-gatame (the cross armlock).
For a complete study of the armlock, there are three core components:
a) The roll
b) Arm straightening
c) Hold-down when the arm doesn't come out
The roll
1. The classical or the most commonly scene version of the juji-gatame roll is the one made famous by Alexander Iastkevich. It's also the roll that inspired Neil Adams to develop his juji-gatame.
2. The Neil Adams roll is less common but is more versatile, and I'd argue, more effective. Key to this roll is the Figure-4 grip on the arm being attacked. This grip allows you to switch from attacking from the back or the front. It's a classic action-reaction move. If uke defends the back, you roll him from the front. If uke defends the front, you roll him from the back. Eventually, he'll roll over.
Arm straightening
1. There are many ways to straighten the arm. Brute force usually isn't one of them. If you are up against a strong opponent, you won't be able to straighten the arm with brute force.
2. An arm lever with a twisting action will allow you to straighten uke's arm quite easily.
Ecky-Gatame
1. Sometimes, no matter what you do, you can't straighten uke's arm. He's that strong. What you can do is switch to a hold-down. The Ecky-Gatame is that hold down.
2. It's not a very secure hold down but uke cannot turn out of it without letting go of his arms.
3. He's caught between a rock and a hard place. If he doesn't turn out, he will be pinned for ippon. If he turns out, you launch into a juji-gatame and gain a submission for ippon. So, uke has to decide. Either way, he's in a whole lot of trouble.
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