O'Mahony back for Munster; Moore replaces Leinster's Ross

Munster have made four changes to their team for tomorrow's clash with Gloucester at Thomond Park.

Peter O'Mahony returns to the back row where he replaces James Coughlan at number 8 while Donnacha O'Callaghan partners Paul O'Connell in the second row as Donncha Ryan moves to the blindside.

Damien Varley and BJ Botha come into the front row while Johne Murphy takes over from the injured Simon Zebo on the wing.

Leinster have made one enforced change for their meeting at home to Castres as Martin Moore takes over from the injured Mike Ross at tighthead.

Michael Bent steps up to the bench while Jimmy Gopperth and Isacc Boss renew their half back combination.

Connacht have made three changes to their starting 15 for tomorrow afternoon's game away to Zebre in Parma.

Matt Healy returns to the wing while Samoa international James So 'Oialo starts at full back.

In the pack Andrew Browne takes over from John Muldoon in the back row.

Scrum half Ruan Pienarr makes his first start of the season for Ulster away to Montpellier.

Roger Wilson starts at number 8 as Nick Willams is out injured while Robbie Diack starts at blindside.

John Afoa is on the bench.