My gym hosted a leg lock seminar by Ian Murray. He is a black belt out of Gracie Tampa and is known for his leg locks. He is competing at the Abu Dhabi trials and hopefully he can make it to the finals. He finished 3rd at the last Abu Dhabi trials. Really cool dude and did a great job of instructing for only being 21 years old. I learned a lot, I just wish my conditioning was up to par so I could keep up.