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1. Cian Healy
The Irish loose head prop will be fresh from a rest and raring to stick it to Toulon's All Black Carl Hayman.
2. Rory Best
His lineout throwing has been second to none of late and his work around the park exemplary.
3. BJ Botha
The Munster tight head was impressive against Leinster last week and will need to be again against the heavyweight Toulouse pack.
4. Paul O'Connell
Big games call for big-game players, which is exactly what O'Connell is. Expect another totemic performance from the Munsterman.
5. Devin Toner
The lanky lock will rise to the challenge of dismantling an under-strength Toulon lineout.
6. Peter O'Mahony
O'Mahony was a star for Ireland in the Six Nations and will produce another stellar display against Toulouse.
7. Gerhard Vosloo
The Toulon-bound South African is a star for Clermont and will prove to be a thorn in the Tigers' paw.
8. Jamie Heaslip
Leinster need a massive game from their captain in Toulon. Heaslip will deliver.
9. Morgan Parra
It's still baffling to think he has been sidelined by the national team. Parra runs games better than most No. 9s in the world and will do so again for Clermont.
10. Owen Farrell
Farrell has blossomed into a world-class No. 10 and will show it against Ulster.
11. Sitiveni Sivivatu
He has made most metres in the competition this season and will threaten Leicester from anywhere on the field.
12. Matt Giteau
The Australian is playing some of the best rugby of his career for Toulon.
13. Brian O'Driscoll
Let's have one last masterclass from the retiring magician.
14. Napolioni Nalaga
The other game-breaking Clermont wing will cause havoc against Leicester.
15. Rob Kearney
Sublime in the Six Nations, Kearney will turn it on again against Toulon.