Full-time: Newport Gwent Dragons 10-29 Scarlets
Ken Owens, Scott Williams, Liam Williams and Harry Robinson tries for Scarlets; Tyler Morgan goes over for Dragons
Full-time: Cardiff Blues 23-31 Ospreys
Ospreys secure Pro12 play-off place
Ospreys tries: Dan Evans, Dan Biggar, Tom Grabham and Ben John with Blues tries from Josh Navidi and Dan Fish
S4C have just shown a referee's camera view of Ken Owens' try.
It confirms that an international hooker running at you at pace is a scary sight - no surprise George Clancy did not make the tackle.
Nick Webb
BBC Radio Wales commentator
"The Scarlets could be ending the Dragons' hopes of getting a playoff place.
"But remember - they did come back from a big deficit at home to Leinster a few weeks back."
Gareth Llewellyn
Former Wales captain on BBC Radio Wales
"The Dragons are appealing for obstruction, but I don't think there's any obstruction here.
"The Dragons are constantly offside, they need to get behind the line.
"The player couldn't get to him from behind because he was in a supporting role.
"It's a good try for Liam Williams."
It takes two minutes for Liam Williams to underline Scarlets' new-found dominance with a slippery, weaving run from five metres out after a series of Scarlets phases. Another easy conversion fro Priestland and the Dragons - having started so well - are shell-shocked.
That's 21 points for Scarlets in five minutes play either side of half-time.
Image source, Huw Evans picture agencyScarlets have started the second half at a rate of knots.
Ross Harries
BBC Scrum V presenter at the Millennium Stadium
Incredible purple patch from the Scarlets. The game's been turned on its head.
Things were slowing down a bit, weren't they? Fourteen points for the Scarlets in three minutes has turned things around, and twitter is going crazy.
Rhodri in Wales: Scarlets fan here and was 100% a block. Absolute joke!
Julian in Newport: He should have gone to TMO, block by the referee. Dragons won't be happy.
Nigel in Cardiff: Clueless Clancy - integral part of the game, but where's that interpretation in the rules??
Jordan in Llanelli: Poor tackling technique from Clancy!!
The funny thing is, all we saw in the first half was praise for Blues v Ospreys referee Nigel Owens. Looks like there isn't as much love for George Clancy, though...
Well, it took off eventually. Scarlets did more damage in the last five minutes than the Dragons managed in the previous 35.
Class from the two Williamses.
But Mr Clancy's intervention in Ken Owens' try is a real talking point.
Can you award a try if the ball carrier has run into the referee? Apparently you can.
And as the Dragons are still bristling, Liam Williams chips ahead and re-gathers before delivering a superb pass to the rapidly supporting Scott Williams who races over by the posts. Rhys Priestland has an easy conversion.
The watching Wales coach Warren Gatland would have been impressed by that - pure class from two of his Six Nations stars.
Ken Owens charges through the middle to score between the posts. But he ran into referee Tom Clancy on the way through and the Dragons complain they were impeded. But the try stands and Rhys Priestland converts.
Would it be fair to say things got a little bit heated there? You lot are loving this on twitter.
Sam in Cardiff: Wow.. I've never seen all 30 players fall to their knees gasping for air. What a mad two minutes.
Jack in Newport: Sick few minutes of rugby there.
Anthony in Llanelli: Even more end to end in the 2nd game... better bring on the oxygen!
Chris in Cardiff: Dragons fans all around me. Probably not a good time to say I'm supporting Scarlets!
First Karl was sneakily listening to the Blues on headphones at a wedding, now Chris has infiltrated the opposition. All we need is some one-liners and we'll have a spy movie...
Tyler Morgan can hold a short pass from scrum-half Jonathan Evans deep in the Scarlets 22, and Hadleigh Parks hammers the ball miles down field where the retreating Tom Prydie is forced into touch. But the Scarlets can't make the most of the attacking opportunity.
Dafydd James
Former Wales and Lions wing on BBC Radio Wales
"It's been interesting, the Dragons set piece has been good and they've won many pens from the scrum, they've done a great job there.
"The Scarlets need to keep hold of possession, they're giving it away far too much. If they can do that they will be fine.
"It's nice to see the Dragons running like they are, right now they're a threat."
It's chaos.
Scarlets blow a chance and when Priestland kicks to the corner Tom Prydie takes a quick throw he finds himself put clear by Tyler Morgan.
Prydie's wandering run comes to nothing, but when Scarlets clear the lines Dragons captain Rynard Landman has a charge for the line but is brought down short.
While all that is going on there's a fight underway, but TV replays show nothing.
That's more like it!!!
How has Judgement Day been for you? Tell us where you are watching or listening.
Email: scrumv@bbc.co.uk
Tweet us: #ScrumV
Dragons retreat at a scrum but get the decision from Mr Clancy and fly-half Dorian Jones hammers one over from 43 metres.
His father - Dragons head coach Kingsley Jones - will be a happy man.
Dragons send a penalty high into the air under the stadium lights but Liam Williams gathers without any trouble. But then the Scarlets give away a scrum.
It took the first game a while to get going, perhaps this one will kick off soon.
Gareth Llewellyn
Former Wales captain on BBC Radio Wales
"That's what you want from your outside back.
"There was nothing obvious on, but Hallam Amos runs at backs, gets his offload in and it was simple hands into the corner from Tyler Morgan.
"Morgan's first try of the season, and it's easily converted by Dorian Jones."
Superb play by the Dragons sees Jack Dixon feed Tyler Morgan who crosses on the left. Was the pass forward? Referee George Clancy doesn't think so and Dorian Jones nails the conversion. Game on!
Image source, Huw Evans picture agency