The Scarlets take on the Ospreys tonight in the first of this weekend's Rainbow Cup Welsh derbies.
Some big hitters are playing, with Lions captain Alun Wyn Jones starting for the visitors and Ken Owens leading the home side.
Here's what you need to know.
What time does Scarlets v Ospreys kick off?
Tonight's match kicks off at 7.35pm at Parc y Scarlets
What TV channel is it on?
The game will be shown live on Premier Sports and online on Premier Sports Player.
S4C will be showing a delayed full match broadcast from 9.40pm tonight. It will also be available on S4C Clic.
What's the Scarlets v Ospreys team news?
Captain Ken Owens returns to lead the Scarlets.
Owens, among four Scarlets named in the British & Irish Lions squad this week, comes in at hooker as one of six personnel changes following the round one defeat to the Dragons at Rodney Parade.
In the back three, Leigh Halfpenny replaces Johnny McNicholl at full-back and joins Steff Evans and Tom Rogers who has recovered from a head knock picked up early on in Newport.
Jonathan Davies and Tyler Morgan continue their midfield partnership, while there is a change at half-back with Angus O”Brien coming in for the injured Sam Costelow and Wales international Kieran Hardy getting the nod at nine for the first time since the Six Nations.
Alun Wyn Jones starts for the Ospreys just days after being named Lions captain, while Justin Tipuric leads the side.
The Ospreys use Ethan Roots at No. 8 and welcome back Gareth Thomas to the starting line-up after a prolonged absence through injury.
Cai Evans figures on the right wing, with Luke Morgan set to make his 50th Ospreys appearance off the bench.
15 Leigh Halfpenny; 14 Tom Rogers, 13 Tyler Morgan, 12 Jonathan Davies, 11 Steff Evans; 10 Angus O’Brien, 9 Kieran Hardy; 1 Rob Evans, 2 Ken Owens (capt), 3 Alex Jeffries, 4 Jake Ball, 5 Lewis Rawlins, 6 Aaron Shingler, 7 Jac Morgan, 8 Blade Thomson.
Reps: 16 Ryan Elias, 17 Steff Thomas, 18 Werner Kruger, 19 Jac Price, 20 Uzair Cassiem, 21 Dane Blacker, 22 Paul Asquith, 23 Joe Roberts.
Ospreys: D. Evans; C. Evans, O. Watkin, T. Thomas-Wheeler, M. Protheroe; L. Price, M. Aubrey; G. Thomas, I. Phillips, T. Botha, A. Beard, A. Wyn Jones, S. Cross, J. Tipuric (capt). E. Roots.
Reps. S. Parry, N. Smith, R. Henry, B. Davies, R. Davies, R. Morgan-Williams, J. Hawkins, L. Morgan