Mark McCall’s Saracens were amongst the losers, but they at least could hold heads high in Limerick after an exhausting bonus-earning 12-17 loss at Munster.
There is no return for O’Mahony, whose last appearance came in the December 13 defeat at Castres.
Munster’s injury list is once again filling up, this time around former junior Springbok Thaakir Abrahams finds himself facing some time on the sideline after sustaining another injury.
Leo Cullen’s unbeaten URC table-toppers defeated Benetton 35-5 last weekend in Italy and they have altered their line-up with two changes in the pack and one in the backs.
New signing Billy Burns is set to make his Munster debut against Bath later today in a pre-season friendly at The Rec.
Munster have made four changes from the side that beat the Ospreys last week in the United Rugby Championship quarter-final for their semi-final with Glasgow Warriors, with RG Snyman and Gavin Coombes both dropping to the bench.
Jack Crowley kicked 13 points as Munster overcame eighth-place finishers Ospreys 23-7 at Thomond Park to earn a BKT United Rugby Championship home semi-final.
