David Young has made three changes to the side that kept their Magners League title hopes alive with a thrilling last minute win against Munster. Nick Macleod, Scott Morgan and Rhys Thomas all return to the starting XV. Jamie Roberts starts on the wing at Stradey Park, with fellow Wales squad member Deiniol Jones at lock.
Having worked hard in rehab on his shoulder injury Marc Stcherbina returns on the bench and is joined by Dai Flanagan who has also recovered from a fractured bone in his hand. Meanwhile, the Scarlets have named three of their stars in the starting line-up. Stephen Jones, Dwayne Peel and Alix Popham make the first XV while Matthew Rees is on the bench.
Scarlets: Morgan Stoddart; Dafydd James, Regan King, Gavin Evans, Nathan Brew; Stephen Jones, Dwayne Peel (capt); Iestyn Thomas, Mahonri Schwalger, Deacon Manu, Adam Eustace, Lou Reed, Dafydd Jones, Gavin Thomas, Alix Popham
Replacements: Phil John, Matthew Rees, Scott MacLeod, James Bater, Gavin Cattle, Matthew Watkins, Jonathan Davies, Nathan Thomas
Blues: Ben Blair; Jamie Roberts, Jamie Robinson, Gareth Thomas, Tal Selley; Nick Macleod, Richie Rees; John Yapp, Rhys Thomas, Gary Powell, Deiniol Jones, Scott Morgan, Maama Molitika, Robin Sowden Taylor, Xavier Rush (capt)
Replacements: Tauf’ao Filise, Gareth Williams, Mark Lewis, Ben White, Jason Spice, Dai Flanagan, Marc Stcherbina
Referee: Tim Hayes (WRU)