Professor Lucas Lepri shows how to get the triangle submission, after attempting to get the side control with an under hook, but the opponent defends. Lucas starts in the side control position and attempts to go for the under hook. The opponent reacts by under hooking first and starts to push. Immediately after the opponent under hooks, Lucas steps over with one leg. The opponent continues to push Lucas back. Lucas cups the back of the neck and slides his other leg out, passing it over the shoulder to lock his feet together. Lucas now adjusts and locks the triangle submission.