Williams (ankle) is expected to miss at least a week, Rylan Stiles of Locked On Thunder reports.
Williams' ankle will keep him out of Monday's game at Houston, and coach Mark Daigneault has already ruled him out of Wednesday's rematch back in Oklahoma City. The Thunder also play Thursday at Memphis, so Williams will almost certainly miss that contest as well, meaning his return won't come any sooner than next Monday's game at Detroit. With Williams out, Daigneault said Isaiah Roby will be in the rotation.