I had been trying to figure this move out for so long. I watched the Genki Sudo westside submission tournament highlight video, and i tried to slow it down to figure out how he does it. Well, I finnally figured it out so I figured I'd post it on here. I set it up from and armdrag...lets just say we're dragging the right arm of your opponent. So you arm drag them and you get them to step towards your right. Then you step in like your going for an inside trip, except its gonna be your right leg hooking their right leg. As your stepping in with the right leg you drop down and do a forward roll. As your rolling over you triangle your legs....the left over the right. You should finish with it set up....your legs are triangled and all you have to do is pull down their foot/ankle to crush the calf along your right shin. I Hope this helps people who were trying to figure it out like me. Also if this has been posted before i appologize. I can post pictures of this also if the explanation isin't enough.