Tony McGahan is taking no chances in naming a 27-strong squad for Munster's opening Heineken Cup game against Northampton Saints in Franklins Gardens on Saturday.
Scrum-half Tomas O'Leary knows Munster must recover their form quickly or face an unthinkable Heineken Cup exit.
"None of us played well against Leinster last weekend and we've addressed that now and there is no point dwelling on it," he said.
"Saturday is the most important thing and getting off to a good start, the Heineken Cup is such a big part of our season. They're a very formidable side with a great home record,a very good pack and halfbacks, with strong runners coming in off both wing. We can't dwell on Northampton too much. We can only look after our own performance."
MUNSTER SQUAD (v Northampton Saints): M Horan, J Brugnaut; T Buckley, Darragh Hurley, D Ryan, D Fogarty, J Flannery, D O'Callaghan, M O'Driscoll, P O'Connell, D Ryan, D Leamy, N Ronan, D Wallace, N Williams, A Quinlan, T O'Leary,T Morland, P Stringer, R O'Gara, P Warwick, J de Villiers, L Mafi, D Howlett, I Dowling, D Hurley, K Earls.