Dermot Gallagher has delivered his verdict on the key talking points from Rangers and Celtic's weekend Premiership clashes.
The former English Premier League whistler analysed big moments from Giovanni van Bronckhorst's away day win over Hearts at Tynecastle and Ange Postecoglou and Co's narrow victory over Motherwell at Parkhead.
Cammy Devlin's first half red card for his challenge on Rabbi Matondo was first under the microscope with the ex-referee in no doubt that it was the correct decision. Speaking on his Ref Watch segment on Sky Sports about the flashpoint, he said: "He comes from all that distance to stamp in on the player. He was always going to get a red card. I don't know why he did that."
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Rangers were then denied a goal for a foul on Craig Gordon, but the former official reckons the Scotland No1 couldn't have too many complaints had Scott Arfield's goal stood in the capital.
He continued: "Well Craig Gordon will say that he's fouled, he's gone to punch the ball and he's collided with a player.
"It's inevitable there will be a collision. If the referee had given a goal then I don't think Craig Gordon could have argued too much."
Later that day in Glasgow, Celtic skipper Callum McGregor was sent-off late on in the 2-1 win over Motherwell after a foul on Ross Tierney.
The midfielder tugged back the Motherwell man after a slack pass from Reo Hatate and Gallagher was in no doubt it was a sending-off - despite the argument over a covering defender.
It could prove to be a key decision down the line with Tierney left with the simple task of firing over Joe Hart for a late leveller had he not been halted in his tracks.
Watching the incident back, Gallagher said: "If you show this and show when Callum tugs him back, the full-back on the far side won't get there.
"There's a lot of distance between them. Watch the pass from Hatate...there's the foul.
"All he [Tierney] has got to do is go on one more yard and chip Joe Hart. He's not really being covered."
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