Ospreys 17-15 Scarlets as it happened

Summary

Ospreys tries from Aisea Natoga and Dan Lydiate, converted by Dan Biggar
Scarlets score five penalty kicks to Ospreys' one
Scarlets' Emyr Phillips, Rhys Priestland and Harry Robinson went off injured, as did Ospreys' Eli Walker
Ospreys are aiming to win their ninth league home match in a row
Scarlets have not beaten Ospreys in Swansea since 2007

Live Reporting

Richard Williams and Owen Rawlings

Get involvedpublished at 17:36 Greenwich Mean Time 27 December 2014
Huw tweets: "That's a shocker, never a yellow card"
But Simon says: "Italian ref got that wrong. Definitely a red card for a tip tackle. He lifted legs and drove him down."
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Postpublished at 17:36 Greenwich Mean Time 27 December 2014
Garin Jenkins
Former Wales hooker on BBC Radio Wales
"Nothing has really got going yet, play has been quite fragmented."
A bit like the start to yesterday's game then!
Rhys Webb offpublished at 17:36 Greenwich Mean Time 27 December 2014
Ospreys' Wales scrum-half Rhys Webb departs for a blood injury. Martin Roberts is on - but probably not for long.
Communication breakdownpublished at 17:35 Greenwich Mean Time 27 December 2014
Image source, Huw Evans picture agency
Referee Mr Mitrea was having difficulty hearing the TMO Derek Bevan. He seems to be happy now that they can hear each other. Crucially he couldn't hear Mr Bevan during the discussion about Kristian Phillips' tackle on Dan Evans so had to make up his own mind by watching the big screen in the ground.
Priestland concernpublished at 17:32 Greenwich Mean Time 27 December 2014
Worryingly for Scarlets Rhys Priestland receives treatment before the restart. He was substituted last time out against the Blues with a leg injury.
Where are you watching or listening? Let us knowpublished at 17:32 Greenwich Mean Time 27 December 2014
And with the rain driving down at the Liberty Stadium, are you in the warm and dry or braving the elements at home or abroad?
Maybe on a tablet or smartphone delivered by Father Christmas?
Let us know! Email scrumv@bbc.co.uk
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Penalty for Ospreys (Biggar) Ospreys 3-3 Scarletspublished at 17:31 Greenwich Mean Time 27 December 2014
Dan Biggar is on target from 30 metres.
Yellow card for Scarletspublished at 17:28 Greenwich Mean Time 27 December 2014
Image source, Owen Rawlings
Kristian Phillips is in trouble for a late tackle on Dan Evans - referee Marius Mitrea issues a yellow card. Was it a spear tackle?
Postpublished at 17:27 Greenwich Mean Time 27 December 2014
Garin Jenkins
Former Wales hooker on BBC Radio Wales
"It's great to see Rhys Priestland putting kicks over from that distance from a Wales point of view.
"That was a great hoof from a massive, massive distance."
Penalty for Scarlets (Priestland) Ospreys 0-3 Scarletspublished at 17:24 Greenwich Mean Time 27 December 2014
Image source, Owen Rawlings
And Rhys Priestland nails the 40 metre-plus kick superbly.
Singing in the rainpublished at 17:23 Greenwich Mean Time 27 December 2014
Scarlets fans are making a decent fist of Sospan Fach as their team win a penalty. Rhys Priestland is going for goal.
Weather watchpublished at 17:22 Greenwich Mean Time 27 December 2014
What sort of weather would you expect in a west Wales rugby derby?
You've got it, vertical rain with intermittent sleet.
Handling will be a challenge.
Scrum timepublished at 17:20 Greenwich Mean Time 27 December 2014
Image source, BBC Sport
First scrum results in a free kick for the Scarlets. Let's hope referee Marius Mitrea gets on top of that quickly.
What do you think? Let us knowpublished at 17:19 Greenwich Mean Time 27 December 2014
Faye James tweets: "Woop . . . Derby time!!!! C'mon Ospreys!!!"
Huw Lewis writes: "Ospreys v Scarlets is on and I am going to the panto #ohnoheisnt"
Jamie Cribb adds: "Let's see who's the best club in welsh rugby #Ospreys #Number1"
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Ouchpublished at 17:17 Greenwich Mean Time 27 December 2014
Regan King gets the ball and Hanno Dirksen at the same time. Merry Christmas!
Here come the Ospreyspublished at 17:16 Greenwich Mean Time 27 December 2014
Alun Wyn Jones leads out the Ospreys accompanied by AC-DC's Back in Black.
Let's rock, I think is the appropriate comment.
We're nearly readypublished at 17:14 Greenwich Mean Time 27 December 2014
The Scarlets are out on the pitch.
Lydiate's debutpublished at 17:14 Greenwich Mean Time 27 December 2014
Today's match is a notable one for Dan Lydiate, who makes his debut for the Ospreys on the blind-side.
Lydiate is playing for the first time since returning to Wales from France and agreeing a national dual contract.
Image source, Huw Evans picture agency
He couldn't have chosen a better match!
More than pride at stakepublished at 17:12 Greenwich Mean Time 27 December 2014
A win for the Ospreys will take them back to the top of the Pro 12 table.
They were top going in to Christmas but a win for Munster over Leinster on Boxing Day and today's Glasgow victory over Edinburgh saw them drop to third place without kicking or passing a ball in anger.
Extra incentive - if any were needed - for the Scarlets against their greatest rivals.
What the coaches have to saypublished at 17:12 Greenwich Mean Time 27 December 2014
Scarlets head coach Wayne Pivac:
"The reason Ospreys are at the top of the table is that they're very consistent and solid, they have some very good leaders within that team.
"Everybody has talked about it since I've been here; everybody has been saying 'just wait until you get to the Ospreys game'. It's going to be exciting."
Steve Tandy of the Ospreys:
"This is the big one as far as the supporters are concerned and it's fantastic that there's going to be the biggest crowd for two years at a regional rugby ground, keeping the Christmas derby tradition well and truly alive.
"This is a derby that really impacts on people's everyday lives, with family, friends and workmates supporting opposite sides and there'll be a great atmosphere at the Liberty."