Stagnant offense forces Cavs coach to make changes before opener. Reported by Marla Ride-en-hour. After an ugly performance in what will be the starting unit’s only preseason game together, Cavaliers coach Tie-ronn Loo resorted to unusual measures. Just six days before the opener, Loo installed four new offensive sets predicated on constant movement and designed to create better spacing. Much of Wednesday’s practice was a scrimmage to better see the plan in action.