Ghanaian right-back Jeremie Frimpong was sent off as Celtic defeated Rangers 1-0 to win their fourth Scottish League Cup in a row and 10th consecutive domestic trophy.
Frimpong was shown his marching orders after fouling Alfredo Morelos in the box, moments after Christopher Jullien had slammed in the winner with the Hoops' only shot on target.
The foul on Alfredo Morelos handed Rangers a glorious opportunity to equalise but Fraser Forster came to their rescue as he saved the Colombian's penalty.
The Rangers striker wasted a number of other opportunities including one in stoppage time as, despite finding the net 25 times this season, he remains without a goal against Celtic.
Neil Lennon's side demonstrated impressive resilience as they further burnish their dominance of Scottish football and are now 31 domestic cup matches unbeaten.
But Neil Lennon's side demonstrated impressive resilience as they further burnish their dominance of Scottish football and are now 31 domestic cup matches unbeaten.
The title was the Ghanaian's was first trophy with the Hoops.