Munster's Donnacha O'Callaghan says he wants revenge when he faces Biarritz Olympique on Saturday...
O'Callaghan was part of the team that lost the Heineken Cup quarter-final to the French side last May, and says he wants to erase the memories of defeat with a win in Cardiff.
"I can remember the desolation in the dressing room last year when we lost the quarter-final. It was such a huge disappointment.
"Fair play they deserved it and at the same time we felt we could have won it. The thing about them is they didn't look to be at their best but still handled Sale and Bath comfortably and that has to recognised.
And O'Callaghan says a Millennium stadium victory would be the highlight of his career to date - a career that has seen him represent the British and Irish Lions and win the Triple Crown with Ireland.
"I know the talk is that this is Munster's year but that's the way it is every year. We know we have no divine right to win it. We have to go out and do it on the pitch. And if we do manage to pull it off it would be the highlight of my career.