All three contentious refereeing moments during Celtic's 2-2 draw with Aberdeen were called correctly.

That's the view of former Premier League referee Dermot Gallagher.

The intense, top of the table Scottish Premiership encounter received Ref Watch treatment on Sky Sports this morning.

And the expert on the panel concluded that the officials were spot on with their calls for both teams.

Duk had a goal disallowed for Aberdeen when it looked like Jimmy Thelin's men had come from two down to take a stunning 3-2 lead.

However, VAR rightly found that the ball had found its way into the net via the striker's arm, so it was chopped off.

Alistair Johnston was later penalised for fouling Aberdeen goalkeeper Dimitar Mitov to allow Adam Idah to score. This was picked up by the officials in the ground though.

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And in a dramatic finish to the match, Duk somehow managed to block a goal-bound Johnston shot from nestling into the corner with a fantastic body block. 

Claims for a handball were made, and VAR checked for a potential penalty, but there was no such award.

Here are Gallagher's comments on each of the incidents...

Duk's disallowed goal:

"This is where VAR works well because without doubt, when I saw this, I thought it was a goal.

"Then you see it clearly comes off his arm into the net directly.

"That's key, because it's not deliberate, but it goes directly into the net off his arm."

Celtic's disallowed goal:

"It's the right decision. Alistair Johnston backs into the goalkeeper.

"If you watch the full back as Idah goes to head the ball, he backs into the goalkeeper and knocks him, so it's the correct decision."

Duk's block off the line/penalty check:

"It hits him in the chest. It hits him in the midriff. It's a great block and you can see why he's celebrating.

"I think this was the last minute. He throws himself at it but he doesn't handle it.

"It's checked by the VAR and cleared."