Scott Wilson is now getting patched up. He should be okay to continue.

To make things worse for Ulster, wing Werner Kok is forced off for a head injury assessment.

Rob Lyttle, drafted in on a short-term deal after Ulster's back three injury crisis, makes his return in white a little earlier than he maybe expected.

Joe Hawkins makes more metres and Exeter are two metres out!

Will Rigg makes about 20 metres after bursting through a gap!

Exteter are up to the 22!

The visitors have the ball in the early stages but Ulster's defence is holding firm.

Off we go!

Jack Murphy gets us under way.

Hollie Davidson is the referee.

How cold is it? It's this cold.

Image source, Getty Images

The teams are out in Belfast after a nice little light show.

They may be the two lowest ranked sides in Pool A, but this should be pretty entertaining.

Image source, Inpho

Head coach Richie Murphy says Ulster must play to their strengths to overcome Exeter Chiefs in tonight's European encounter in Belfast.

While both teams are winless in the Investec Champions Cup this season, a victory for either side would keep alive their slim chances of reaching the knockout stages.

"I think it's going to be a really tough game, obviously both teams haven't won in Europe yet so there's a prize in relation to that," Murphy told BBC Sport NI.

"We felt the second half of the Leicester game got away from us and we probably went into our shell a little bit.

"This week is all about going back to what we do well and trying to get the ball on the pitch, trying to play to the space."

Ian Humphreys
Former Ulster fly-half Ian Humphreys on BBC Radio Sounds

In all of these games, Ulster have shown enough that if they can get away from basic errors and soft penalties, then they have a chance. Their defence has been better than the scores have indicated. Whenever they don't hold their own at set piece then they have been in a little bit of trouble.

Image source, Inpho

Exeter director of rugby Rob Baxter says it is up to him and his coaches to get the side out of its current poor run of form.

The Chiefs were thrashed 69-17 by French Top 14 leaders Bordeaux in the Champions Cup on Saturday.

The loss, which saw Exeter concede 11 tries, all but ended any outside hopes of making the knockout stages.

Exeter opened the scoring thanks to Paul Brown-Bampoe's try, but from then on it was all Bordeaux as the French side went 31-5 up at half-time before adding another 38 points in the second half.

It was the latest defeat in a difficult season for Exeter who have won just one of 13 games across the Premiership and Champions Cup all season.

"I've just said to the coaches we've got to find the ways to get them to get those fundamentals, those foundations, really drilled in and trusting them," Baxter told BBC Radio Devon.

"They give you an in into the game that you then work from, we never established that at all.

"I don't think there was one facet of the game where we could go 'we established a base line to work from'."

Image source, Inpho

Former Ireland and Ulster flanker Stephen Ferris says James McNabney has to relish the opportunity after his selection as a development player in Ireland's Six Nations squad.

The 21-year-old Ulster back row will travel to Portugal for the team's pre-tournament training camp before the opener against England on 1 February.

"It's an interesting selection because he certainly hasn't been Ulster's first-choice back row," said Ferris.

"He's very, very good with ball in hand. He's got a turn of pace. He's a big man as well. That's something that we've been crying out for in Ulster and of course with Ireland at times.

"It's a huge opportunity for him. He's got to go down there and relish it. You don't go down to the Irish camp and think you're a development player and just hide behind and not say too much. You want to absolutely get stuck in."

Uncapped Leinster prop Jack Boyle was named in Simon Easterby's squad, which was announced on Wednesday with a trio of Ulster players - Iain Henderson, Rob Herring and Cormac Izuchukwu - making the 36-man panel.

BBC Sounds

You can listen to tonight's match on BBC Radio Ulster and BBC Sounds.

Gavin Andrews is joined by Ulster and Leicester fly-half Ian Humphreys and former Scotland wing Tommy Seymour.

Jim Neilly is on commentary alongside 1999 European Cup winner Tony McWhirter.

We'll also have updates right here, so you won't miss a thing!

Image source, BBC Sport

Ulster and Exeter Chiefs, the two winless sides in Pool 1, face off on Friday at Kingspan Stadium in a match likely to decide who will finish fifth and secure Challenge Cup qualification.

Both sides still have a slim chance of a place in the Champions Cup last 16, but the winning side would need to secure a bonus point fourth try and hope Bordeaux thrash Sharks on Sunday by a big enough margin for them to go through on points difference.

Sharks need a point from their final game to reach the last 16, while Leicester Tigers, Toulouse and Bordeaux have all qualified.

Leicester face Toulouse on Sunday knowing a win could secure one of the top two seeds and home advantage in the last 16.

Maximum points for Bordeaux against Sharks will secure their spot as top seeds. Failure to do so will hand Toulouse or Tigers an opportunity to steal top spot.

Image source, Inpho

It has been a disappointing campaign for Ulster, who have been heavily beaten in all three of their matches.

It started with Antoine Dupont's Toulouse, the current European holders, showing their class in a dominant 61-21 win.

Bordeaux inflicted another sizeable defeat on Richie Murphy's side despite Ulster being in the contest for most of the game.

On Saturday, Leicester Tigers scored 38 unanswered points to make it three defeats out of three in Europe.

Image source, Inpho

It has been a similar campaign for Exeter Chiefs, who are currently bottom of Pool One.

Their European bid started with a defeat away to the Sharks, before Toulouse inflicted an Ulster-level hammering in a 64-21 win.

Bordeaux put just shy of 70 points on Rob Baxter's side in a commanding 69-17 victory in Exeter's back yard.

Image source, Inpho

Rob Lyttle is set to make his first Ulster appearance in two years after being named on the bench for Friday's must-win Investec Champions Cup pool game against Exeter Chiefs in Belfast (20:00 GMT).

The 27-year-old Banbridge wing left Ulster at the end of the 2022-23 season, but has been training with the squad in recent months amid a back-three injury crisis.

Lyttle, who scored 19 tries in 64 games during his first spell, has signed a short-term deal as injury cover and is drafted into head coach Richie Murphy's matchday squad as backline support with Ethan McIlroy and Zac Ward ruled out.

Ulster: S Moore; W Kok, B Carson, J Postlethwaite, M Lowry; J Murphy, N Doak; E O'Sullivan, R Herring, S Wilson; I Henderson (capt), C Izuchukwu; J McNabney, N Timoney, D McCann.

Replacements: C Reid, T Stewart, C Barrett, H Sheridan, K Treadwell, J Cooney, J Flannery, R Lyttle.

Image source, Inpho

Exeter, who like Ulster have lost all three games so far, make 12 changes with only wings Ben Hammersley and Paul Brown-Bampoe and prop Josh Iosefa-Scott retained after last week's heavy loss to Bordeaux.

England back Henry Slade and Wales forward Dafydd Jenkins are among those not included by the Premiership strugglers.

Exeter: H Skinner; B Hammersley, J Hawkins, W Rigg, P Brown-Bampoe; W Haydon-Wood, N Armstrong; W Goodrick-Clarke, J Innard (capt), J Isoefa-Scott; R Tuima, C Tshiunza; M Moloney, R Capstick, R Vintcent.

Replacements: Max Norey, K Blose, J Roots, J Dunne, L Pearson, J Bailey, T Cairns, Z Wimbush.

Image source, Inpho

Here we go! It's the final round of Pool fixtures in Europe's top tier.

Ulster and Exeter have had dismal campaigns to date, but both still have hope of scraping through to the last-16 - even if those chances are slim.

Realistically, tonight's game looks like a shootout as to who will drop into the Challenge Cup, while the loser from tonight's contest will exit Europe altogether.

There's a lot on the line, so let's hope it's a good game!