Gareth Griffiths
BBC Sport Wales at Swansea.com Stadium

That is a brilliant start from Ospreys with two early tries.

Ospreys were 17-0 up against Scarlets last weekend and lost. They will want to make sure they don't let any advantage slip again.

Well Richie, he's back on his feet but that left leg/knee is very heavily strapped.

Richie Rees
Former Wales international on BBC Radio Wales

Two tries in five minutes is excellent work from the Ospreys, but they have to keep their eye on Dan Edwards, he's still down!

That would be such a big loss.

I said first blood to Ospreys and I meant that literally... try-scorer Adam Beard is getting tratment for a cut above the eye.

But he won't care, he'll want to carry on after that start.

Richie Rees
Former Wales international on BBC Radio Wales

You know the Ospreys would have reviewed 'how to not let a 14-0 lead slip', like they did last week.

They've started outstandingly well this week.

It is Ospreys' Dan Edwards who takes the kick-off and we are under way in the sun in Swansea.

Ospreys: Walsh; Kasende, Boshoff, Williams, Giles; Edwards, Morgan-Williams; Thomas, Lake, Botha, Davies, Beard, Morgan (capt), Tipuric, Morris.

Scarlets: Murray; Page, Roberts, James, Mee; Lloyd, Davies; Hepburn, Elias, Thomas, Price, Lousi, Fifita, Macleod (capt), Plumtree.

Referee: Matthew Carley (RFU)

Richie Rees
Former Wales international on BBC Radio Wales

Perfect weather for rugby today.

It was an excellent game of rugby when they faced each other last weekend, Ospreys have made nine changes, they'll be hoping to have a big bounce-back from last week.

Image source, Huw Evans Picture Agency

The two head coaches know each other so well from their playing days together at Llanelli and Wales.

Now they're going head to head for the second time in a week as head coaches.

Ospreys threw away an early 17-0 lead at Parc y Scarlets last week but Jones remains positive for the rematch.

"Ospreys v Scarlets is always a massive fixture and for it to be the first time the teams have faced each other in the knockout rounds of an EPCR competition adds an extra edge," said Jones.

"We're expecting a big crowd on the weekend, which is brilliant. We know our supporters will get behind the boys and be our 16th man, which is what Welsh derbies are all about."

Scarlets came from behind last week to clinch their first win against Ospreys since January 2022.

"We realise it will be a different challenge this week," said Peel.

"It takes me back to the old December double headers in the Heineken Cup.

"Momentum is important and we need to carry that final 60 minutes of last Saturday into this game.

"Ospreys will be pumped for it, we need to make sure from an emotional point of view we are right there and then we can play our game on the back of that."

Gareth Griffiths
BBC Sport Wales at Swansea.com Stadium

The crowd is building here slowly.

Ospreys were hoping for a crowd of around 10,000 after there were more than 11,000 at Scarlets last Saturday for a game that kicked off at 3pm on a Saturday afternoon.

The Swansea stadium holds more than 20,000, so if they can get the ground more than half full they will be somewhat content, as both sets of fans aim to create an atmosphere on a Sunday evening.

Image source, Getty Images

So far this weekend...

Friday

• Edinburgh 24-12 Lions
• Pau 24-49 Bath

Saturday

• Bayonne 22-32 Bulls
• Montpellier 17-24 Gloucester
• Connacht 35-20 Cardiff
• Perpignan 18-24 Racing 92

Also today

• Lyon v Sharks (17:30 BST)

Image source, Huw Evans Picture Agency

It's that time of year when player contracts get sorted and Scarlets have been no different.

Wales back row Taine Plumtree has signed a new deal to remain at Parc y Scarlets "for the foreseeable future".

Plumtree, 25, is in his second season in west Wales, the Swansea-born player having made the move from New Zealand in summer 2023.

He follows Eddie James and Joe Hawkins in re-signing, while Scarlets have also this week snapped up Wales Under-20s prop Louie Trevett on a short-term loan deal from Bristol Bears.

The 19-year-old loose-head arrives as cover for injured Wales prop Kemsley Mathias.

It's only a week since these teams met in the United Rugby Championship.

Take another look at what went down at Parc y Scarlets.

Image source, Huw Evans Picture Agency

Scarlets' Dwayne Peel makes just two tweaks to his side that beat their Welsh neighbours 38-22 in the league last weekend.

Wales international Ryan Elias switches with Marnus van der Merwe at hooker and Jac Price comes in for Alex Craig at lock.

Wales stars Blair Murray, Joe Roberts, Eddie James, Henry Thomas and Taine Plumtree all start.

Scarlets finished third in Pool 3, beating Black Lion and Vannes at home but lost both away games so far in the tournament - at Bayonne and Gloucester.

Scarlets: Blair Murray; Macs Page, Joe Roberts, Eddie James, Ellis Mee; Ioan Lloyd, Gareth Davies; Alec Hepburn, Ryan Elias, Henry Thomas, Jac Price, Sam Lousi, Vaea Fifita, Josh Macleod (capt), Taine Plumtree.

Replacements: Marnus van der Merwe, Sam O'Connor, Sam Wainwright, Alex Craig, Jarrod Taylor, Efan Jones, Ioan Nicholas, Dan Davis.

Image source, Huw Evans Picture Agency

Ospreys head coach Mark Jones has rung the changes for today's cup clash and he looks like he means business.

Wales hooker Dewi Lake returns to the Ospreys pack along with prop Tom Botha and lock Rhys Davies.

Flanker Justin Tipuric's re-introduction to the back row sees Wales captain Jac Morgan switch from open to blind-side.

Lake has not started for club or country since Ospreys' Challenge Cup trip to Montpellier in mid-December - their only defeat in the tournament this season.

After undergoing bicep surgery he made two replacement appearances for Wales in the Six Nations and came off the bench for Ospreys at Parc y Scarlets last weekend.

Full-back Jack Walsh, wings Dan Kasende and Keelan Giles, centre Keiran Williams and scrum-half Reuben Morgan-Williams are also all back.

Ospreys: Jack Walsh; Dan Kasende, Evardi Boshoff, Keiran Williams, Keelan Giles; Dan Edwards, Reuben Morgan-Williams; Gareth Thomas, Dewi Lake, Tom Botha, Rhys Davies, Adam Beard, Jac Morgan (capt), Justin Tipuric, Morgan Morris.

Replacements: Sam Parry, Garyn Phillips, Ben Warren, James Fender, Morgan Morse, Luke Davies. Owen Williams, Iestyn Hopkins.

Image source, Huw Evans Picture Agency

It's a derby, it's a cup match and it's sunny... what more could we ask for!

Welcome to the Swansea.com Stadium for the first ever European meeting between these two local rivals.

And they will also see which Welsh region will continue to fly the flag in the European Challenge Cup.

Europe has been both welcome distraction and an additional burden for the Welsh regions.

But the Challenge Cup could now offer the best way of getting something out of this season for both Ospreys and Scarlets.

Currently 12th and 11th, respectively, in the United Rugby Championship, both teams are looking to secure a place in the last eight of Europe.

And that also means one step closer to a potential final just down the M4 at the Principality Stadium next month.

So first, let's take a look at the two teams.