Referee Nick Walsh comes over to the monitor to review his penalty call given against Hearts' Stephen Kingsley.

After careful consideration, there is no penalty and Dundee only have a corner.

The defender's arm is tucked right in and the ball may have struck his chest.

Handball against Stephen Kingsley following Lyall Cameron's shot.

VAR will have a say in that, I'm sure.

Simon Murray bursts into the Motherwell box and looks to square it for Eamonn Brophy.

It's just a yard or two behind his strike partner, though.

Moments later, Conor Randall darts in from the left and almost dinks one over Liam Kelly but his chipped effort is nodded away from the empty net by Paul McGinn.

Ross County are becoming the dominant side now.

Chances at either end in quick succession.

First, St Mirren snap at Kilmarnock heels and win possession high up the pitch through Scott Tanser.

Ryan Strain's delivery finds Mikael Mandron, but the striker's header loops kindly into the arms of Will Dennis.

The visitors break quickly, and Marley Watkins burns down the left before firing just across the face.

Play starting to open up here...

Kenny Crawford
BBC Sport Scotland at Almondvale

Cammy MacPherson is back in the St Johnstone starting line-up today and he’s making a big difference.

It’s his first start since 23 September.

The former St Mirren midfielder brings real composure and some excellent deliveries from set pieces and open play.

Image source, SNS

Jane Lewis
BBC Scotland in Paisley

The temperature is showing 22C and the players have just had a water break. There's a waft of sun tan lotion floating around the stands. This is how football should be played... In the sunshine.

Another stop forced upon St Johnstone goalkeeper Dimitar Mitov as Joel Nouble takes aim.

The resulting corner comes to nothing, but Livingston have slowly but surely started to get forward and threaten the Saints goal after their terrible start.

As if VAR stoppages weren't enough, referee Nick Walsh has called for a water break at Tynecastle...

Scorchio!

Finally, a chance for the home side.

A long throw-in from Michael Nottingham sends the Saints defence into disarray, with Cristian Montano's stabbed effort kept out by a superb Dimitar Mitov at the back post.

Ross County equalised 10 minutes ago and there's been little of note since.

The hosts have fought their way back into the game and are enjoying more of the ball now.

Theo Bair does well to reach a long, searching pass down the other end but the visitors fail to create anything from his hard graft.

St Johnstone could, and should, be a few goals up.

Great hold-up play from Adama Sidibeh, perhaps made too easy by his marker, allows Drey Wright to burst forward and unleash a fierce strike from a tough angle that flashes wide.

Brian McLauchlin
BBC Scotland at Tynecastle

This isn’t being played like a game with little at stake. Hearts are a real threat for the Dundee defence, with Forrest and Shankland looking lively.

I have to say the atmosphere inside the stadium is also quite fantastic, with both sets of fans playing their part.

A phenomenal stop from Will Dennis in the Kilmarnock goal.

Scott Tanser, roaming well off the left flank, pops up on the end of a clipped Ryan Strain ball, swivels and hooks one over his shoulder.

It's a brilliant flying save from Dennis, leaping to his right, before the offside flag is raised.

Alan Forrest's brother, James, had an impressive performance as Celtic beat Rangers earlier and the Hearts winger shows what he can do by cutting inside from the right and unleashing a shot.

A deflection makes it awkward for Jon McCracken but the Dundee goalkeeper does the necessary.

And, moments later, it's a superb save from McCracken to keep out Kenneth Vargas' header.

Game starting to pick up.

Moments after a scramble inside the Livingston six-yard box, the ball drops to Graham Carey around 25 yards out.

The midfielder goes for the spectacular, with his sweetly hit first-time volley looping over the bar.

Dundee have lots to play for here with Europe still an outside possibility. They force a corner but cannot make anything of it and Hearts are soon back on the attack after having the better of the early exchanges.

We'll bring you reaction from the managers at half-time.