Rangers have lost their appeal over Lee McCulloch's red card against St Mirren and he will now serve a two-game ban.
McCulloch was sent off by referee Steve McLean for violent conduct after catching Graham Carey with an elbow during his side's 2-1 defeat at St Mirren Park last month.
Rangers appealed the dismissal, meaning McCulloch was available for the Old Firm derby with Celtic on 28th December as the process was delayed due to the holiday period.
However, the SFA's disciplinary committe have upheld the ban and McCulloch will now miss this Sunday's Scottish Cup tie with Arbroath, live on Sky Sports HD1 and next week's trip to St Johnstone.
The news is a blow for Rangers boss Ally McCoist as he is already missing Steven Davis and Steven Whittaker for the trip to Gayfield.