Professor Lucas Lepri shows how to get a collar choke after taking the opponent’s back. Lucas is controlling the opponent’s back and uses one hand to open the same side collar so he can slide his opposite hand deep into that collar. Once he establishes the grip, the same hand that was used to open the collar is now used to grip the opposite side lapel. Lucas now sits up and comes up onto his elbow. As he comes onto his elbow, he pulls back on the collar and down on the lapel to finish the choke.