Owen Dodgson has room on the left to whip a low ball into the box, but Kelle Roos is able to smother. Dundee are going for it late on.

Leighton Clarkson off , Shayden Morris on. Is that the change to spur Aberdeen to victory?

Bruce Anderson - he had to score there! David Martindale has his head in his hands!

He got on the end of Dan MacKay's cross but planted wide.

Just as well, MacKay was offside anyway. That could have been even more heartbreaking.

County go close again. Josh Sims connects to a Simon Murray cross, but he doesn't get enough on his flicked volley and Michael McGovern can gather easily.

This really could go either way.

Aberdeen look like they've got a second wind after those changes. They're pushing in the attacking third but they can't manage to find a way past the dark blue shirts in the box.

Killian Phillips now comes on for his debut, with Jack Milne making way. Aberdeen finally switch to four at the back.

Scott Pittman is inches away from scoring a second from Livingston.

It's a wonderful strike from the edge of the box, but it flashes past the post.

Jo Shaughnessy makes a great diving challenge as Bojan Miovski was running on to the loose ball in Dundee's final third.

A couple of changes now. Ester Sokler and Jack MacKenzie make way, with Ryan Duncan and Pape Gueye on.

Dundee are bringing on Dara Costelloe, Scott Tiffoney, Zach Robinson and Jordan McGhee are the ones to make way. Curtis Main is also on. Can he haunt his former club?

A big chance for Livingston.

It's neat play from Stephen Kelly and Dan Mackay, who crosses to the near post.

Bruce Anderson was waiting, but County get a crucial block in.

Yan Dhanda had a chance from a free kick, about 25 yards out.

It was not of the same quality as his effort at Tynecastle, It curls harmlessly over the bar.

Willie Miller
Former Scotland international on BBC Sportsound

Barry Robson is looking at this game thinking 'Dundee are the better team, I've got to shake something up'.

Dundee's one change at half-time has completely changed this game.

Livingston goalkeeper Michael McGovern flings himself at the feet of Jordan White to block the County substitute's shot from a few yards.

It was McGovern's fault that White had the chance to score after flapping at Yan Dhanda's cross, but at least he made up for it!

Stephen Kelly is about to come on for Livi.

Dundee look rejuvenated after that goal and have a chance to take the lead. But the shot from Josh Mulligan is blocked by Nicky Devlin and goes out for an Aberdeen throw.

Barry Robson's side escape for now...

Tyrone Smith
BBC Scotland at Pittodrie

That Sokler goal being ruled out was a real lifeline for Dundee.

And they have certainly grasped it.

I suspect the Dark Blues will feel this game is now there for the taking.

This game could go either way, it really could.

Both teams are getting into good positions out wide and getting crosses into the box, but the defences are holding firm.

Ross County full-back James Brown blasts a shot over from 25 yards.

The ball comes through to Ester Sokler and he produces a brilliant finish in the box - but the flag is up quickly.

VAR will, of course, check.

It's tight, but it is offside by a matter of inches.

The players are back out at Pittodrie.

Josh Mulligan is on for Mohammed Sylla for Dundee.

And we're back under way again...

Livingston left-back James Penrice is a lucky boy. He's late with a tackle and is penalised. He was already on a booking, and that could have been a second one.