with that tim duncan move,its basically just fundamentally sound foot work,which tim is known for,so anyways u have ure back to the person,back him down, make him defend you and stuff,then u plant ure right foot (left foot if ure on the right side)and u want to pivot spin and get your other foot over/in front of ure defenders foot.by then u have a step on ure defender,and u just power ureself to the hoop.hope that helped