Mostert (hamstring) will not play in Thursday's preseason finale against the Bears, Nate Ulrich of the Akron Beacon-Journal reports.
Mostert didn't play in the Browns' third preseason game and wasn't expected to play Thursday. He's battling for the team's No. 3 and possibly final running back slot, and missing time won't help his cause. Terrell Watson figures to see some extra snaps while Mostert is out.