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Davis hooks in opener & Kenny diverts Aribo cross into own goal for second
Edouard penalty saved by McGregor after Elyounoussi spurns glorious chance
Rangers to host St Johnstone in last eight
Hibs beat Stranraer to set up Motherwell quarter-final
Kilmarnock v St Mirren & Aberdeen v Dundee Utd are other last-eight ties
Rangers 2-0 Celtic
Pat Bonner
Former Celtic goalkeeper on BBC Sportsound
Quote MessageCeltic have started on the front foot, what a strike from David Turnbull. He forces McGregor to produce a big-hand, a big-save.
Rangers 2-0 Celtic
Celtic skipper Scott Brown is the first player to be cautioned and it's a harsh booking since he timed a sliding tackle on Ryan Kent to perfection.
Rangers 2-0 Celtic
Celtic come haring out of the blocks and David Turnbull thunders in a shot from 22 yards. Allan McGregor is at full-stretch to push it away.
Rangers 2-0 Celtic
The second half is up and running.
Celtic have swapped left-backs, with Greg Taylor on for Diego Laxalt.
HT: Rangers 2-0 Celtic
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HT: Rangers 2-0 Celtic
Tom English
BBC Scotland's chief sports writer on Sportsound
Quote MessageRangers have had a terrific attitude about them. They've been excellent. They've shown an accuracy and ruthlessness that Celtic just don't have.
HT: Rangers 2-0 Celtic
So, Celtic need at least two to take this to extra-time.
A reminder that Rangers have conceded just three goals in 18-and-a-half domestic games this season.
Image source, SNSStephen Welsh can't quite believe his first-half miss
Rangers go into the interval in a very strong position.
Steven Davis conjured up a lovely overhead finish and Jonjoe Kenny knocked in an own goal after good work from Joe Aribo.
Celtic spurned a glorious chance to level when Stephen Welsh failed to knock home from close range.
Image source, SNSRangers celebrate doubling their lead at Ibrox
Rangers 2-0 Celtic
Stuart McCall
Former Motherwell and Rangers manager on Sportsound
Quote MessagePatterson's been excellent today. He's improving game by game and showing a real maturity. On performances he should have a real shout of getting in the Scotland squad.
Rangers 2-0 Celtic
As half time approaches, Celtic look a bit stunned. The official stats show Rangers have had one shot on target and they lead by two goals.
Own goals obviously don't count in that area.
Rangers 2-0 Celtic
Pat Bonner
Former Celtic goalkeeper on BBC Sportsound
Quote MessageCeltic frailties on show again. Laxalt misses the tackle and is beaten so easily. Aribo then has the time and space to deliver his ball in perfectly
Rangers 2-0 Celtic
Stuart McCall
Former Motherwell and Rangers manager on Sportsound
Quote MessageAribo is the architect again and that's what you want from your wide man, to get get across his marker.
Jonjoe Kenny O.G
Joe Aribo dances past Diego Laxalt and then cleverly delays his cross before firing the ball into the near post, where Ryan Kent applies the finish.
Or does he? On second viewing, it looks like the touch actually came from defender Jonjoe Kenny.
Image source, BBC SportRangers 1-0 Celtic
Pat Bonner
Former Celtic goalkeeper on BBC Sportsound
Quote MessageIt's a superb run. Laxalt again allows Patterson down on the inside and he can't get a tackle in. Perhaps he should've pulled it back, but what a run from the young man
Rangers 1-0 Celtic
Nathan Patterson looks in the mood as he thrusts forward on a strong run, taking him past three Celtic players, before thundering a shot high into the side-netting.
Rangers 1-0 Celtic
Stuart McCall
Former Motherwell and Rangers manager on Sportsound
Quote MessageRangers need to get possession of the ball. Since the opening goal they've had no control of the game.
Rangers 1-0 Celtic
Pat Bonner
Former Celtic goalkeeper on BBC Sportsound
Quote MessageStephen Welsh has his hands on his head after that latest opportunity for Celtic, they're getting a few now. What a moment from the young man to nearly make his mark
Image source, SNSRangers 1-0 Celtic
It should be 1-1. Celtic defender Stephen Welsh throws himself at a low cross right in front of goal and somehow steers the ball away from goal with his outstretched boot.
Kris Ajer is first to the loose ball and his deflected shot is stopped near the line by Filip Helander, who keeps a cool head to thump it clear.
Rangers 1-0 Celtic
Now it's Callum McGregor has a go as he drives forward and hammers a shot just wide.
Rangers 1-0 Celtic
Better from Odsonne Edouard this time as he shifts the ball on to his right foot in a busy penalty area and fires a fierce shot straight at Allan McGregor.
Moments later, Celtic come again and Ryan Christie drags an effort wide from 18 yards.