This Saturday's game brings French giants Stade Toulousain to Cardiff to face the Blues for a third consecutive season in the European cup competition.
It currently stands at one win apiece for the two teams and after last season's quarter final defeat, Toulouse will be looking for revenge.
Tickets for the game have now reached the 10,000 mark and the Blues team are hoping for a big crowd, which was all important in last season's win over Toulouse, to help spur them on this Saturday.
15. Ben Blair 14. Leigh Halfpenny 13. Tom Shanklin 12. Jamie Roberts 11. Tom James 10. Sam Norton-Knight 9. Gareth Cooper 1. Gethin Jenkins 2. Gareth Williams 3. Faao Filise 4. Deiniol Jones 5. Paul Tito (C) 6. Andy Powell 7. Martyn Williams 8. Xavier Rush
16. T Rhys Thomas 17. Sam Hobbs 18. Gary Powell 19. Scott Morgan 20. Sam Warburton 21. Richie Rees 22. Ceri Sweeney 23. Dafydd Hewitt