Cardiff Blues have won three of their past four matches in all competitions, and will be looking for a repeat of the away victory at Connacht on 22 January.
The Scarlets won both encounters with the Blues in season 2003/04, but the Blues exacted some revenge with a 14-10 win at the Arms Park on 7 November.
Scarlets v Blues
At Stradey Park
kick off 3.30pm
live on S4C
Referee: George Clancy (IRFU).
For information on travelling to this game with Cardiff Rugby Supporters club
HEAD TO HEAD - RECENT MEETINGS
Scarlets 35- 20 Blues
8 Oct 04 - Celtic League
Llanelli Scarlets Scorers - Matthew Watkins(T), Tal Selley(T) Gareth Bowen(2C/7P)
Cardiff Blues scorers - Lee Abdul(T), Nick Robinson(2C/2P), Andy Moore(T)
Blues 0-6 Scarlets
Sat 13 Mar 04 - Celtic League
Llanelli Scarlets Scorers Gareth Bowen(2P)
Blues 14-10 Scarlets
Sun 7 Nov 04 - Celtic League
Llanelli Scarlets scorers - Barry Davies(T) Gareth Bowen(C/P)
Cardiff Blues Scorers Dean Dewdney(T) Lee Thomas(3P)