Postpublished at 58 mins
Rangers 0-1 Celtic
A wee chink of light for Rangers to attack but Cyriel Dessers isn't sharp enough to reach a through ball from Todd Cantwell.
FT: Aberdeen 0-2 Hibernian - Le Fondre gives managerless Hibs the lead at Pittodrie before Doidge adds quick second
FT: Hearts 0-1 Motherwell - Slattery slots beyond Clark from threaded Spittal pass; McGinn given second red for fouling Boyce
FT: Rangers 0-1 Celtic: Kyogo played onside by Souttar to lash stunning volley in seconds before half-time
Celtic edge top of the table four points clear of Rangers, level on points with Motherwell
Colin Moffat
Rangers 0-1 Celtic
A wee chink of light for Rangers to attack but Cyriel Dessers isn't sharp enough to reach a through ball from Todd Cantwell.
Rangers 0-1 Celtic
The home side are struggling to create openings, with Celtic getting men behind the ball and hunting in packs. It's all very congested in the middle of the park at the moment.
Rangers 0-1 Celtic
Neil McCann
Former Rangers winger on BBC Sportsound
What a wonderful right-hand from Butland.
That ought to be a corner.
Rangers 0-1 Celtic
Jack Butland keeps Rangers in this with an outstanding stop, getting fingertips to Liel Abada's low, angled drive.
A sliding Daizen Maeda is inches away from connecting as the ball slips by the post.
The officials don't even acknowledge the goalkeeper's agility, incorrectly awarding a goal-kick.
Rangers 0-1 Celtic
Tom English
BBC Scotland's chief sports writer on Sportsound
Rangers have to get something out of this game.
They're going to have to put a bit more risk into it, which makes them more vulnerable at the back.
Rangers 0-1 Celtic
Here we go for the second half.
No changes in personnel.
HT: Rangers 0-1 Celtic
HT: Rangers 0-1 Celtic
Martin Dowden
BBC Sport Scotland at Ibrox
What an unbelievable finish that was from Kyogo. Right before half-time and that changes everything.
He has done it so often but that is top-class on an occasion like this.
It's such a blow to Rangers.
HT: Rangers 0-1 Celtic
Tom English
BBC Scotland's chief sports writer on Sportsound
I've watched it multiple times...
What I think I see is Dessers' right foot stands on Lagerbielke's right foot, then, Lagerbielke's left foot kicking Dessers and Lagerbielke goes down.
Did Dessers right foot definitely stand on Lagerbielke? Is it clear and obvious?
HT: Rangers 0-1 Celtic
Neil McCann
Former Rangers winger on BBC Sportsound
It's never a free-kick, it's not a foul.
HT: Rangers 0-1 Celtic
Kris Boyd
Former Rangers striker on Sky Sports
How that can be brought back for a foul is incredible.
The referee has got to be stronger.
HT: Rangers 0-1 Celtic
We think there's rule about a player in the act of kicking the ball being impeded...
But the pundits are in full flow, debating the Rangers' disallowed goal.
HT: Rangers 0-1 Celtic
Tom English
BBC Scotland's chief sports writer on Sportsound
It was a million miles an hour, absolutely breathless from start to finish.
A sucker-punch from Kyogo... Everyone was taken by surprise. It's a peach of a strike.
HT: Rangers 0-1 Celtic
Pat Bonner
Former Celtic goalkeeper on BBC Sportsound
He's so switched on, Kyogo.
He turns a half-chance into a beautiful volley, leaving Jack Butland with no chance.
The teams trot off in near silence.
Kyogo, who had two good chances to open the scoring, takes his third opportunity in emphatic fashion.
Rangers have had two efforts disallowed. No question about the first but the second will have the pundits arguing for hours.
Rangers 0-1 Celtic
Neil McCann
Former Rangers winger on BBC Sportsound
He's miles onside!
My goodness, that's such an amazing finish. Smashing it on the volley first time.
That's just changed the team talks... But, what a cheap, cheap goal to lose for Rangers.
HT: Rangers 0-1 Celtic
Pat Nevin
Former Scotland winger on BBC Radio 5 Live
It feels weird, a goal is scored and it all goes quiet.
Rangers have switched off. It's not a complicated piece of work.
Kyogo never stops.
Kyogo Furuhashi
Boom! Kyogo is given the freedom of Ibrox by the home defence and decides to take the shot on early.
It's the right option as his clean hit from just outside the box whizzes past Jack Butland.
A wonderful finish.
Rangers 0-0 Celtic
Kemar Roofe wriggles free at the back post to meet a looping corner from James Tavernier but can't direct his header on target.
Rangers 0-0 Celtic
Neil McCann
Former Rangers winger on BBC Sportsound
The communication between Hart and Lagerbielke was non-existent and it nearly caused a calamity.
When a long, direct ball goes over the top towards the two Celtic centre-backs, they look very, very uncomfortable.