Willie Miller
Former Scotland defender on BBC Radio Scotland

Having already been booked, Aberdeen right-back Dominic Ball gets his marching orders as he leaves Ryan Christie prone on the ground with a thumping challenge.

The on-loan Rotherham United man's elbow connects with the Celtic midfielder's chest - and his head to the opponent's face.

Not sure if it was deliberate, but it was certainly late.

First effort on goal by Sam Cosgrove, but the big striker's volley from 16 yards from Dominic Ball's cross is well wide.

Bizarre moment as a ball-boy gets over excited and comes on to the park to stop the ball before it has gone out of play next to the Aberdeen corner flag.

Referee Craig Thomson is obliged to give a drop ball and Celtic striker Odsonne Edouard does the gentlemanly thing and kicks it out for a goal kick to his opponents.

Willie Miller
Former Scotland defender on BBC Radio Scotland

Ryan Christie dummies a pass from Odsonne Edouard to provide Callum McGregor a sight of the Aberdeen goal, but the Scotland midfielders curling drive is just over the crossbar.

Mentioned earlier that Dominic Ball is having a tough time against Jonny Hayes and the Dons right-back is booked for pulling down the winger with a trailing leg.

Celtic are applying the pressure again, but Odsonne Edouard's shot on the turn is blocked before the Dons nervously and hastily clear the danger.

Pat Bonner
Former Celtic goalkeeper on BBC Sportsound

James Forrest is booked for diving on the edge of the penalty box.

The Celtic winger went down after a what looked like minimal contact from the arm of Andrew Considine.

A free-kick, or penalty, would have been harsh, but so is the yellow card.

Odsonne Edouard is lucky to escape a yellow card as the Celtic striker pushes Lewis Ferguson in the chest after the Aberdeen midfielder attempts to help him to his feet and, after the Frenchman rejects the offer, cheekily taps him on the head.

Aberdeen are into the Celtic box at last, but Connor McLennan's attempt to flick a back-heel over his own head just lifts it into the arms of goalkeeper Scott Bain.

It's all a bit scrappy now. Aberdeen won't mind that if it means the wind has disappeared from Celtic's early sails.

Aberdeen have settled into the game, although their spell of possession ends in no threat to the Celtic penalty box.

And Dominic Ball looks a bag of nerves filling in for the absent Shay Logan at right-back and facing the speed of Jonny Hayes.

Singer and Celtic fan Rod Stewart is enjoying the atmosphere at Hampden.

As a former Aberdeen centre-half, Scotland head coach Alex McLeish will not just be on a scouting mission.

Image source, SNS

Image source, SNS

Jonny Hayes bursts into the Aberdeen penalty box, but his low drive squirms so wide of the far post it doesn't even go for a goal kick.

However, the Republic of Ireland winger has already shown he means business against his former side.

Willie Miller
Former Scotland defender on BBC Radio Scotland

Pat Bonner
Former Celtic goalkeeper on BBC Sportsound

Jozo Simunovic isn't normally seen as an attacking threat from open play, but the centre-half goes close within a matter of seconds.

He strides forward before firing a low drive that goalkeeper Joe Lewis does well to turn wide at full stretch.

From the corner, he rolls it wide from close range. Big miss and the Dons sigh with relief.