While we wait for the second half, why not watch some highlights from today's earlier game?

Image source, Huw Evans Picture Agency

If you're just joining us for Newport Gwent Dragons v Scarlets, you haven't missed much.

If you're a Mexican wave fan, however, boy have you missed out on some quality entertainment..

Just three penalties from that first half - two from Angus O’Brien, one from Dan Jones - and not a lot else!

Dafydd Pritchard
BBC Sport Wales at the Principality Stadium

If the Cardiff Blues' demolition of the Ospreys was a firecracker of a game, the second is certainly a damp squib.

The Dragons won't care - they're doing a fine job of shackling the Scarlets.

But for the neutral, there is precious little to get excited about.

Newport Gwent Dragons are denied the opening try of the game by the Scarlets defence despite piling over the try line.

Referee Nigel Owens deems no grounding.

Newport Gwent Dragons hooker Rhys Buckley is penalised for an illegal no-arms tackle on Wales and Scarlets second-row Jake Ball.

Dan Jones slots over the penalty.

Scarlets have some more injury worries with Liam Williams landing awkwardly after his try-saving intervention by covering a kick from Angus O’Brien.

Makeshift flanker Tadgh Berne also received lengthy treatment. It's all going for the Dragons so far

Image source, Huw Evans Picture Agency

You would find it hard to believe the Scarlets have something major to play for with their flat start.

Remember, if they win they will go above the Ospreys to third place in the Pro12 table.

A big blow for the Scarlets as flanker James Davies is forced off with what looked like a shoulder problem.

Davies is a pivotal player in the Scarlets ranks.

Just as a Mexican Wave threatens to take over in the stand, Dragons fly-half Angus O'Brien gives the crowd real reason to cheer as he strikes with two penalties in quick succession for the game's first points.

Dafydd Pritchard
BBC Sport Wales at the Principality Stadium

There's a gentle hum of noise around the Principality Stadium as the Dragons and Scarlets get to grips with today's second match.

The game has yet to ignite and quite a few in the crowd are still returning to their seats after a few refreshments in between the two fixtures.

It has the feel of a cricket match, that constant but relatively quiet murmer of thousands of fans chatting away.

Scarlets are overwhelming favourites today, and it is the Llanelli-based region who have started strongest, with the likes of Wales centre Jonathan Davies making probing runs into the Dragons' 22.

The Dragons have been forced into an early change as well, with prop Lloyd Fairbrother taken off injured to be replaced by Brok Harris.

We are under way in today's second game.

Kick-off is soon approaching.

Image source, Huw Evans Picture Agency

In Judgement Day IV, Scarlets sealed European Champions Cup qualification with a scrappy bonus-point win against Newport Gwent Dragons.

Scott Williams marked his return from injury with a try while Steven Shingler, Steffan Evans and Gareth Davies also crossed.

Meanwhile, Adam Warren and Adam Hughes crossed for the Dragons.

Image source, Huw Evans Picture Agency

Jonathan Davies and Liam Williams return to the Scarlets starting line-up for their Judgement Day game against Newport Gwent Dragons on Saturday.

Ken Owens, who scored on his 200th appearance in Scarlets' 51-5 demolition of Treviso, retains his starting place.

Scarlets: Johnny Mcnicholl, Liam Williams, Jonathan Davies, Scott Williams, Steff Evans, Dan Jones, Gareth Davies, Rob Evans, Ken Owens, Samson Lee, Jake Ball, Tom Price, Tadhg Beirne, James Davies, John Barclay

Replacements: Emyr Phillips, Wyn Jones, Werner Kruger, David Bulbring, Will Boyde, Jonathan Evans, Hadleigh Parkes, DTH van der Merwe

Ulster have lost 22-20 against Munster which means the Ospreys stay third at the moment but if the Scarlets defeat the Newport Gwent Dragons, the Scarlets will go third and the Ospreys drop to fourth.

Image source, Huw Evans Picture Agency

The Dragons make five changes with Adam Warren, Sam Hobbs, Lloyd Fairbrother, Matthew Screech and Nic Cudd all returning to the XV.

Kingsley Jones' side will be looking to end a run of nine consecutive defeats.

Newport Gwent Dragons: Carl Meyer, Adam Hughes, Tyler Morgan, Sam Beard, Adam Warren, Angus O'Brien, Charlie Davies; Sam Hobbs, Rhys Buckley, Lloyd Fairbrother, Matthew Screech, Cory Hill, Ollie Griffiths, Nic Cudd, Lewis Evans (capt)

Replacements: Thomas Rhys Thomas, Phil Price, Brok Harris, Ashley Sweet, Harrison Keddie, Dorian Jones, Tom Prydie, Jack Dixon

Not a bad showing!