Venue: Parc y Scarlets, Llanelli Date: Tuesday, 26 December Kick-off: 17:35 GMT
Coverage: Live on S4C, plus score updates on the BBC Sport website and app

Scarlets: Leigh Halfpenny; Johnny McNicholl, Scott Williams, Hadleigh Parkes, Steff Evans; Dan Jones, Gareth Davies; Rob Evans, Ken Owens (capt), Werner Kruger, Tadhg Beirne, David Bulbring, Aaron Shingler, James Davies, John Barclay.

Replacements: Ryan Elias, Wyn Jones, Simon Gardiner, Steve Cummins, Josh Macleod, Aled Davies, Rhys Patchell, Paul Asquith.

Ospreys: Dan Evans; Ben John, Kieron Fonotia, Owen Watkin, Jeff Hassler; Sam Davies, Tom Habberfield; Nicky Smith, Scott Baldwin, Dmitri Arhip, Bradley Davies, Alun Wyn Jones (capt), Dan Lydiate, Justin Tipuric, Olly Cracknell.

Replacements: Scott Otten, Paul James, Ma'afu Fia, Adam Beard, Rob McCusker, Rhys Webb, Dan Biggar, Ashley Beck.

Referee: Ian Davies (WRU)

Assistant referees: Ben Whitehouse (WRU), Craig Evans (WRU)

TMO: Tim Hayes (WRU)

Depends on the weather... should be an arm wrestle if wet, good practice for the Scarlets for their upcoming game at Bath.

This could well be a good game to watch if the rain stops on Sunday.

Sadly, the weather forecast says it's dry in Llanelli on Wednesday.

Damn.

Should be a good game.

Looking forward to Cubby Versus Tupiric. Is this the first time they will have played against each other??

Ospreys bench packed with match winners. I guess their expecting a close 60 mins and then they bring on the big guns to bring home the bacon.

The two 7s played against each other in May.

The two 7s might well have played against each other, but Cubby wasn't one of them.

The ospreys that have played in Europe will make this a good game that could go either way.

The usual pro 14 performance and it's a comfortable 20 point win for the *fuppers* from down west

Quite right, Rob, Nadolig llawen...

Scarlets team that day:

15 Johnny McNicholl
14 Liam Williams
13 Jonathan Davies
12 Scott Williams
11 Steffan Evans
10 Rhys Patchell
9 Gareth Davies
1 Rob Evans
2 Ken Owens
3 Samson Lee
4 Lewis Rawlins
5 Tadgh Beirne
6 Aaron Shingler
7 Josh Macleod
8 Will Boyde

The game is a sell out apparently.

Ben John is wasted on the wing. He should be at 13 or even 12.

Hopefully the Scarlets will win of course, but that the Ospreys are truly competitive. STill, don't see what Tandy brings to the party but the players are also to blame for their recent woes.

Bookies have it Scas by 9

If the going is good and not spoilt by the elements, I think there will be quite a few tries.
The bounce of the ball may decide the outcome.
To win is more important for us as Ospreys are already toast in the Pro14.

If the weather reports are on the ball then the Dragons v Blues match should kick off in reasonably dry conditions.
Not so with the Scarlets v Ospreys game, it'll either be snowing or be piddling down with rain.
They should rather bring forward kick off at 2:00 pm.