Celtic go to Tannadice for a noon showdown with Dundee United on Sunday, while Hearts make the short trip to Livingston on the same day (15:00 GMT).

We'll be back with more Scottish Premiership coverage on Saturday when the card looks like this...

• Aberdeen v St Mirren
• Hibernian v Motherwell
• Rangers v Dundee
• St Johnstone v Ross County

If you need a football fix before then, Inverness Caledonian Thistle v Kilmarnock is BBC Scotland's tasty looking Friday night Championship offering (19:45).

Good night!

You can catch up with half an hour of highlights from tonight's game on BBC Scotland at 23:00 GMT.

Image source, SNS

On his side's injuries, Ange Postecoglou added: "Ralston is probably the one that is the most concerning. For him to go off it's probably something significant.

"The plans for January haven't changed one bit though. The plans are to bring players in."

"That means the ref's on three points, he's still bottom of the league," says a perplexed Ange Postecoglou when told about Robbie Neilson's take on the game.

"If anyone thinks the ref decided that game they’re watching a different game to what I am," he tells BBC Sportsound. "I think we should have won by more goals, that’s my analysis. He has his analysis, he can communicate it the way he wants, I’m communicating it the way I want."

Celtic manager Ange Postecoglou tells BBC Sportsound: “It was a game with a fair bit on it which is great, it’s what you want for the supporters.

"We were just missing being more ruthless. At 1-0, the opposition are always in it but I think Joe [Hart] only had one save to really make, we defended very well I thought.

"On another day we’d take our opportunities and make the scoreline more reflective.

"We’re going to have to break down defences at times but if teams want to get aggressive we have to move the ball quickly."

"I'd end up going to jail if I said what I really think about it," adds Hearts boss Robbie Neilson when asked about Bobby Madden's decision to go for a drop-ball after Jota's injury.

"I've never seen anything like it in my life," he adds. "The boy pulls his hamstring and the referee stops the game and gives them the ball back when we're going to counter-attack. But that's Scottish football... You're in Glasgow."

Hearts head coach Robbie Neilson cuts a frustrated figure in his BBC Sportsound interview.

"I was delighted with the players, especially the second half I thought we had the better of the game," he said. "We played on the front foot, pressed Celtic and created chances.

"We didn't get beaten by Celtic, we got beat by poor decisions from the officials, that’s the galling thing.

"I’ve seen it, everyone would agree with it [the goal being offside]. The linesman had a brilliant view. I don’t want to say too much, last time I did, at Ibrox, I had the book thrown at me.

"We deserved to take something out of the game, in key moments in the game Craig Gordon had a few good saves but we had good chances. But we were done by a very, very poor official."

Michael Stewart
Former Hearts midfielder on BBC Sportsound

Darren Jackson
Former Celtic & Hearts forward on BBC Sportsound

There are sure to be more calls for VAR in Scottish football after Kyogo's decisive goal. But when will we get the technology in place?

Thumbs up if you want it pronto, thumbs down if you're happy with the current system.

Michael Stewart
Former Hearts midfielder on BBC Sportsound

A good night for Celtic as they continue to impress and stay on the coattails of Rangers.

But it came at a cost, with apparent muscle injuries for three players; Anthony Ralston, Jota and Stephen Welsh.

Image source, SNS

A few of the Hearts players were giving referee Bobby Madden a bit of constructive criticism at the end there. The visitors will be aggrieved that the only goal appeared to be scored from an offside position.

Image source, SNS

Pat Bonner
Former Celtic goalkeeper on BBC Sportsound

Kyogo's first-half goal is enough to move Celtic back to within four points of Premiership leaders Rangers.

Hearts gave the home side a few scares in the second half, while Celtic just couldn't find a second goal to settle the nerves.

Image source, SNS

Time is ticking away and Hearts can't get anywhere near Celtic goalkeeper Joe Hart.

Pat Bonner
Former Celtic goalkeeper on BBC Sportsound

James Forrest jinks one way, then another, but his route to goal is blocked by maroon shirts and he lays it off for David Turnbull, who watches his deflected shot spin narrowly wide.

Into stoppage time we go.

Lots of open space now as the game breaks back and forward like a basketball contest. Tom Rogic has a pop from 18 yards but John Souttar makes a terrific sliding block.