Artemis BJJ (PHNX Fitness), Can Sönmez, Bristol, UK - 11/12/2014
For the pressing armbar, start by breaking their posture, then get an over-under grip (wrapping one arm around their head, the other under their arm). Get a gable grip (palm to palm) and then clamp down firmly on their shoulder.
Break their posture by pulling your knees to your chest, then wrap up their head with an arm. Reach your other arm under their same side armpit, clasping your hands together palm to palm and locking on their shoulder. Get your hips out to the side and extend their arm. Clamp their wrist between your head and shoulder. With your armpit arm, slide that up their arm, staying tight so they have no room to move.
Bring your leg up their back, aiming to squash them into the floor. If they are able to stay upright, they can drive into your and weaken your control. Push their head away with what was your head wrapping arm if you need to. Relock your gable grip, pulling your arm over their elbow to roll it up. That makes it hard for them to escape, as they need to get their elbow down to pull the arm free. To finish, pull down on their elbow.
Keep in mind that there needs to be some space to pull down into. If you haven't got enough on your side and you're holding too low with your head and shoulder clamp, you might end up just shoving their arm into your own chest. It's important to secure both their wrist and their shoulder for this to success. Nathan Leverton had a name for this at his LSG seminar: 'stick theory'. In other words, to snap a stick across your knee, you hold it at both ends, not just one.
Teaching Notes: Similar things came up as to when I taught this at our central location last week, like making sure people got on their side and created some space into which to pull the arm. I risked joining in a bit with sparring this time, but mainly staying on top in guard. On the bottom I resisted the temptation to do much with my injured leg, meaning I got passed a lot and stuck under side control. But that's ok, at least I get to move a bit. In future, probably best for me to stick with specific sparring, maybe work on my passing. I'm thinking half guard might be an option too, or maybe open guard. Very frustrating either way, as I was just starting to feel like I was making a breakthrough with my guard problems. Grr.