Steven Davis is brought on to replace the injured Joe Aribo in Rangers' midfield. The former has had to go off after a nasty head injury that required a large bandage to be applied to his head.

Very nearly a second goal for Celtic and Vakoun Issouf Bayo. Tom Rogic is starting to swagger in the final third and his cross is perfectly weighted to find the forehead of the Ivorian.

Bayo's header flies down but bounces hard and high and loops over the crossbar.

Ouch!published at 20:06 British Summer Time 25 September 2019

20:06 BST 25 September 2019

Livingston 0-1 Rangers

Joe Aribo is down on the ground and the Rangers midfielder seems to be bleeding from his head after an aerial challenge with Ricki Lambie.

We're only 20 minutes in to this game, but it's already the second Rangers player to go down with a head injury after Ryan Jack went down and received lengthy treatment.

James McFadden
Former Scotland forward on BBC Radio Scotland

Neil McCann
Former Scotland winger on BBC Sportsound

It's been all Hearts, but Aberdeen have a chance to go ahead as Christophe Berra downs Ryan Hedges with a clumsy challenge.

Celtic are bossing the opening stages, making several promising forays down the right flank through Jeremie Frimpong and Lewis Morgan.

It's the man playing on the left, though, Jonny Hayes, who delivers for Vakoun Issouf Bayo to head over the bar.

A lively start for Joe Lewis in the Aberdeen goal. This time, he's forced to make a save after Ryotaro Meshino bursts through. Two chances in two minutes for Hearts.

It is a hectic start at Almondvale as Livi striker Lyndon Dykes goes down under a challenge from Filip Helander.

Big calls for a penalty from the home fans, but nothing is given.

Uche Ikpeazu is so close to opening the scoring for the home side.

He's one-on-one with goalkeeper Joe Lewis, but the striker's shot cannons off the underside of the bar and then he can't turn in the rebound. Promising start by the hosts.

An early chance at Rugby Park for Kilmarnock defender Stephen O'Donnell, who has a shot tipped round the post by goalkeeper Chris Maxwell.

It comes moments after Glenn Middleton fired in a low cross that goalkeeper Laurentiu Branescu dealt with comfortably.

Rangers are on the attack right from kick-off.

A James Tavernier free-kick eventually drops to Alfredo Morelos, but the striker is offside.

We're under way at the four grounds...Who will make the semi-finals?

Will there be more pressure heaped on Hearts' Craig Levein and Hibs' Paul Heckingbottom?

The players are coming out on to the field of play.

Under-pressure Hibernian head coach Paul Heckingbottom has dropped Scott Allan and Florian Kamberi to the bench tonight in search of a greater cutting edge.

Heckingbottom also confirmed right-back Jason Naismith misses out with an injury picked up in Sunday's 2-1 Edinburgh derby loss to Hearts.

"Christian Doige and Glenn Middleton coming in are for opportunities in the box," he told BBC Radio Scotland.

"Between both boxes we’ve been okay, we seem to have tightened up a little bit at one end, but we’ve not had enough goal threat at the other. So when we get deliveries into the box, I’m expecting Christian Doidge to be in between the posts being an absolute nuisance to the centre-backs.

"We’ve got another game in less than three days, but that’s not to say I’m resting players. We’re desperate to be in the semi-final. This is us picking a team we think is going to be more of a threat."

Image source, SNS

Aberdeen manager Derek McInnes on BBC Sportsound: "I think Hearts will be buoyed by the result [against Hibernian] but it's important we try to impose ourselves on the game and don't let the crowd get into it much. We're well aware of their threat.

"We're short in certain areas, but we're trying to manage that situation."