2 Part Technique - Dominating with an underhook is crucial for passing into side control from the half guard. If you fall into your opponent's half guard and he pummels for control with the underhook, initiate the back step and look to dig for an underhook on the opposite side, finishing with Underhook & Head Control for the Back Step Pass. If your opponent follows your back step and beats you to the underhook again, transition back to the original side and reclaim the underhook with Underhook & Head Control for the Over Under Pass vs Half Guard.