Motherwell fell to a narrow defeat against 10-man Celtic as they regained their place at the top of the Premiership table.
But the Scottish champions were made to work hard for it, following one of the most bizarre own-goals in recent memory, and a straight red card shown to captain Callum McGregor for denying Ross Tierney a clear goal-scoring opportunity.
Ange Postecoglou's men were in action for the first time since losing 2-0 at St Mirren two weeks ago, and they were keen to avoid a repeat in front of a huge Celtic Park crowd.
