Leinster and Munster teams announced for tomorrows Magners League matches.
Leinster coach Michael Cheika has made three changes for his side to face Ulster at Lansdowne Road.
Rob Kearney starts at fullback in place of the injured Girvan Dempsey, Chris Whitaker returns at scrum half while Will Green starts in the front row.
Ulster boss Mark McCall has left a number of vacancies in his side for the clash.
McCall must decide between Paddy Wallace and David Humphreys at outhalf, if Humphreys starts Wallace will go to centre at the expense of Kevin Maggs.
There's also a decision to be made between Mark Batholomeusz and Bryn Cunningham at fullback.
Munster, meanwhile, have made seven changes for that game.
In come Darragh Hurley, Chris Wyatt, James Coughlan, Jeremy Manning, Leifemi Mafi, Tomás O'Leary and Christian Cullen.