Getting the underhook in the guard, especially the butterfly guard and the half guard, is incredibly important because it gives you a huge amount of control over your opponent’s body and also gives you a route to his back. This gripfighting technique to get the underhook is one I learned by watching Eddie Cummings in competition and I hope it helps you too! For more tips check out my butterfly guard playlist on Youtube here: https://www.youtube.com/watch?v=bPVTmG22ZxE&list=PLyknAhj6gPvJLUJ6sMrbqbUfItYgyNaCf