Tom Rogic’s first-half strike was enough to give Celtic a 1-0 win over Motherwell and cut the gap on Scottish Premiership leaders Rangers back to four points.
Rogic converted David Turnbull’s disguised free-kick at the end of an end-to-end first half during which Motherwell hit the bar.
The home side were far more comfortable after the break as they restored a four-point deficit on Rangers but they suffered another injury to an attacking player when James Forrest trudged off with a muscle problem.
Celtic were without a recognised striker after midweek hamstring injuries to Albian Ajeti and Kyogo Furuhashi.
Turnbull started up front, supported by Rogic and Callum McGregor behind him.
Motherwell also had fitness issues in a key area with Bevis Mugabi their only natural centre-back. Left-back Jake Carroll lined up in the middle of defence.
Celtic are at Ross County at 7.45pm on Wednesday, while Motherwell host St Johnstone at 3pm on December 18.