Entering Sunday's contest Tate had played 86.8 percent of the snaps. Against the Bears, he played just 57 percent (nine snaps more than Roberts). Tate played only five snaps in the second half, all in the red zone, per the Detroit Free Press. Whether Caldwell planned to curtail Tate's snaps beforehand or decided mid-game, it's a demotion. Coaches (at least good ones) lacking playmakers don't take the few they possess off the field without reason.