Ross Laidlaw makes a huge save to stop Killie going in front. Danny Armstrong plays a one-two with David Watson and unleashes the shot. It deflects wickedly but Laidlaw sticks up an arm to palm behind.

What a game this has been so far!

After a ticking off from the referee for a robust challenge, Richard Taylor has just had a nice chance for St Mirren.

A scramble in the box from the corner and the ball ends up at Taylor's feet. He does well to hold onto it and get himself the right way round but the shot goes just wide.

Bevis Mugabi and Calum Butcher have two fresh-air swipes at the ball but Motherwell eventually survive another Celtic attack.

Here come the visitors now as Blair Spittal races away and looks to slide in Mika Biereth, who is just beaten to the ball by Cameron Carter-Vickers.

We waited a little while for a save, but Will Dennis has made two fantastic saves in the last two minutes and seen one cleared off the line.

Ryan Leak got onto the end of a Yan Dhanda cross and Dennis sprawled towards the top corner to turn behind for a corner.

Then, Dhanda teed up James Brown in the next phase of play and Joe Wright was back to block on the line.

Finally, Scott Allardice tried to dink the keeper and Dennis tipped over the bar. Panic stations for Killie.

St Johnstone hit back as a deep cross causes some confusion in the Hearts box as goalkeeper Zander Clark comes to claim it, but Stephen Kingsley nods it over his own bar.

First real bit of work for Liam Kelly.

Greg Taylor slides one from the left to Matt O'Riley, whose first-time side-foot effort is palmed away to the keeper's right.

The one-way traffic continues as Liam Boyce crashes a shot from wide of the near post into the side-netting.

Dara Costelloe passes the ball straight out the park for a Hearts corner.

Alex Lowry delivers to the back post, and Liam Boyce forces goalkeeper Dimitar Mitov to push the ball wide.

Another corner comes in and no Hearts player can get on the end of Kye Rowles' flick.

It's all Hearts.

Hibs want a penalty here after Lewis Miller is bundled over in the box by Amadou Bakayoko.

It's very clumsy from the Dundee striker, but Don Robertson says nothing doing.

No real shock but Celtic have Motherwell camped in.

The visitors have had to deal with a fair few crosses from Luis Palma already, the latest of which is a corner that's headed away.

Well look to break but Mika Biereth can't find a man in amber.

Kheredine Idessane
BBC Scotland at Celtic Park

He was coy about it when I asked him pre-match but the Motherwell manager Stuart Kettlewell has moved Calum Butcher forward from central defence into a holding midfield role. Still a back three (back five when Celtic attack), with O'Donnell and Brodie Spence as the wingbacks

A wonderful sweeping move from Hearts forces Dimitar Mitov into a fine save.

It came from playing out from the back. Alex Cochrane surges inside from the left, and gets the ball back after a couple of flicks from Lawrence Shankland and Alan Forrest.

The wing-back then fires the ball on target but Saints survive.

We have a goal in the Scottish Cup already, with Kai Fotheringham firing Dundee United in front at Queen of the South.

Image source, SNS

Blair Spittal, you're a lucky lad.

The Well midfielder gets caught overplaying on the edge of his box but Celtic can't punish the away side as Luis Palma's dinked cross is claimed by Liam Kelly.

Kheredine Idessane
BBC Scotland at Celtic Park

To say Motherwell are up against it here at sunny Celtic Park is the understatement of the day. They've only taken two points from their last available 27. Their hosts have only dropped four all season.

You also have to go back 30 meetings between these two to find the last time 'Well won one. It was here at Celtic Park in December 2015 when Louis Moult grabbed a double.

The international break hasn't slowed down St Mirren as they almost find themselves in front.

Mark O'Hara's header goes just wide of Shamal George's left hand post.

The Derek Adams revolution almost gets off to the perfect start as County string some passes together and Yan Dhanda springs free in the box.

He has a shot at goal... but drags it wide. Only 30 seconds in!

They're away on time in Dingwall. A bit tardy elsewhere.

St Mirren manager Stephen Robinson told BBC Sportsound: "It was a poor performance (at Dundee), you have those days so we don't dwell on it too much.

"We have played a lot of good football. We still have to remember that we can get in behind and that is what we have been working on this week. It is not a major reset but a small change to get us back to winning ways.

"There is nothing in the league, not a lot between Livingston and ourselves in terms of talent and personnel - it is juts a run of results.

"Livi are on a poor run of results but we can't be the ones that put them back on a decent run."

When asked about the latest VAR stooshie: "When it goes for me, it's great, when it goes against me it is rubbish.

"It is our livelihoods that are on the line. Ultimately the people that matter are fans - ask them what they think.

"Is it making the game a spectacle for fans? They need to have a big, big say in this and communication with fans need to be so much better.

"We accept that people make mistakes but ultimately fans have to be the deciders. During Covid it was awful for them, does this make it better?"