The Judo Keylock is a method of trapping an opponent’s arm in order to better pin him. Coach John Saylor teaches his method of doing a Judo Keylock. View hundreds of videos of judo, freestyle judo, Shingitai Jujitsu, sambo, submission grappling and sport jujitsu on our Youtube channel at http://youtube.com/user/welcomematstevescott. The Welcome Mat Judo-Jujitsu Club was founded in 1969. Please subscribe to our Youtube channel if you have not done so already. Visit our web sites at http://www.WelcomeMatJudoClub, http://www.judoblackbelt.com and visit our online store at http://www.WelcomeMatStore.com. Join our premium channel at http://www.grapplingcoach.us. Thank you for watching our video.