Professor Lucas Lepri shows how to counter the over under pass and talks about concepts on preventing the pass. The opponent starts to pass using the over under pass. Lucas starts to defend by controlling the arm and shoulder on the other side. This makes it really difficult for the opponent to continue. Lucas now shrimps out and pulls the opponent down. He grips the belt and then comes up to the side. Lucas reaches for the opponent's near side leg and drives forward to make the opponent fall to the side. From here, Lucas then passes.