Image source, Huw Evans Picture Agency

Believe it or not, there could be a trophy lifted today, with a victorious side raising the Welsh Shield.

That is a mini-table involving the four Welsh professional sides based purely on points gained in the derby games in the regular United Rugby Championship league season.

Only Cardiff and Scarlets are in with a chance of collecting the silverware, with last season's winners Ospreys and Dragons out of contention.

Cardiff are currently three points ahead of Scarlets and know a victory against Ospreys will see them awarded the title.

If Cardiff draw without a bonus point, or if they lose, Scarlets will be crowned Welsh champions should they gain a maximum points victory against Dragons.

Image source, Huw Evans Picture Agency

It's a big day for referee Ben Connor who takes charge of only his second United Rugby Championship game.

The 21-year-old is the son of former Wales Sevens international and current Wales Women attack coach Shaun Connor.

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Cardiff head coach Matt Sherratt: "I think being back in the Principality is massive.

"It's the home of rugby in Wales, right in the middle of the city, and you're getting the four regional teams with the best Welsh players under one roof on one day.

"There's three teams vying for the top eight, that's something I haven't experienced before.

"To have ourselves, Ospreys and Scarlets all in the middle of the table with something to play for adds that extra bit of spice."

Cardiff captain Liam Belcher: "There's always a bit of an edge in any derby, whether there's something on it or not. We're all around about the same points tally - with four games left every point matters. If we come out with a win it puts us in great stead going forward.

"The best Judgement Day I had was two years ago. A lot of the boys were leaving, and to send them off with a win was unbelievable. To end that season on that high was amazing.

"The way the Ospreys play at the moment is quite expansive, it's great to watch. We like to think we play a nice, exciting, fast game, so for the neutral fans it'll be a very good, exciting, opening game."

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Ospreys head coach Mark Jones: "It's got something really meaningful on it, it's always got the passion, always got the rivalry, but doesn't often have the potential of getting into knockout stages on it. As it is at the moment, it's very much an important fixture for both teams.

"Our boys are excited about playing on a pretty famous pitch with a lot on the line. I think it probably is a must-win for us looking at how many fixtures are left."

Ospreys hooker Dewi Lake: "Whenever you get the chance to play here, in front of the crowd, run out onto the turf, it's an unbelievable feeling whether you're playing for Wales or your home region.

"There's not major opportunities to play in this stadium, growing up as a young Welsh kid, whether you're a boy or a girl, that's something you dream of.

"A game like Judgement Day was talked about when I was growing up watching rugby, it's always been a fixture in the Welsh calendar."

Ian Gough
Former Wales international on BBC Radio Wales

This is the stage you have to perform on.

There’s three points difference between Cardiff and Ospreys, it’s a huge game. These are the ones you have to show up and perform in.

Matt Sherratt says Cardiff being placed into administration was a shock to everyone in world rugby.

The capital region have since been taken over by the Welsh Rugby Union but still have hopes of reaching the play-offs this season.

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Cardiff have recalled Wales prop Corey Domachowski to their starting line-up.

Loose-head Domachowski is one of four changes, with lock Ben Donnell and flanker Alex Mann also returning to the pack.

With Rey Lee-Lo not fit, Harri Millard moves to outside centre and Gabriel Hamer-Webb comes in on the left wing.

Cardiff: Cam Winnett; Josh Adams, Harri Millard, Ben Thomas, Gabriel Hamer-Webb; Callum Sheedy, Johan Mulder; Corey Domachowski, Liam Belcher (capt), Keiron Assiratti, Ben Donnell, Teddy Williams, Alex Mann, James Botham, Taulupe Faletau.

Replacements: Evan Lloyd, Danny Southworth, Rhys Litterick, Rory Thornton, Alun Lawrence, Thomas Young, Aled Davies, Rory Jennings.

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Wales skipper Jac Morgan leads an Ospreys side weakened by injuries in the pack that leaves them without Justin Tipuric, Adam Beard, Morgan Morris and Rhys Davies for this game in the United Rugby Championship.

With Beard and Davies unavailable, James Fender and James Ratti start in the second row, while Tristan Davies lines up at six, Jac Morgan is at open-side and Morgan Morse starts at eight.

Gareth Thomas starts for Ospreys at loosehead prop, with Sam Parry lining up at hooker and Tom Botha completing the front three.

Reuben Morgan-Williams is named at scrum half with Dan Edwards at 10. Keiran Williams partners Evardi Boshoff in the centre.

In the back three, Jack Walsh starts at full-back, with Keelan Giles on one wing and Dan Kasende on the other.

Ospreys: Jack Walsh; Daniel Kasende, Evardi Boshoff, Keiran Williams, Keelan Giles; Dan Edwards, Reuben Morgan-Williams; Gareth Thomas, Sam Parry, Tom Botha, James Fender, James Ratti, Tristan Davies, Jac Morgan (capt), Morgan Morse.

Replacements: Dewi Lake, Garyn Phillips, Ben Warren, Will Spencer, Lewis Lloyd, Kieran Hardy, Owen Williams, Iestyn Hopkins.

Image source, Huw Evans Picture Agency

Hello and welcome to the 10th edition of Judgement Day, with Wales' four professional sides set to battle it out at the home of Welsh rugby.

Cardiff and Ospreys kick off proceedings at the Principality Stadium before Scarlets and Dragons go head-to-head.

This year there's more than just derby bragging rights at stake.

Scarlets, Cardiff and Ospreys still have ambitions of finishing in the top eight of the United Rugby Championship and reaching the end-of-season play-offs, while Dragons are destined to finish bottom after a disastrous season.

Let's have a look at how the first teams line up.