McGahan sticks with winning XV

After snatching a dramatic victory over Northampton Saints, Tony McGahan has opted for the same starting XV for Saturday's Heineken Cup meeting with Castres Olympique in Stade Ernest-Wallon (3.40pm Irish time).

The only change to the match day squad comes on the replacements bench as Marcus Horan returns having recovered from an ankle injury that forced his late withdrawal from the squad for the Northampton game. John Ryan drops out of the squad.