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.
The defeat shouldn't deny Saracens progress to the round of 16. Next weekend’s home game with Castres will likely herald a third win in four to guarantee their place in the knockouts but they will be hurt that they didn’t see this job through at Thomond Park.
There is no return for O’Mahony, whose last appearance came in the December 13 defeat at Castres.
Saracens suffered a surprising 29-19 defeat to Ealing Trailfinders in their Premiership Rugby Cup opener at Trailfinders Sports Club.
Round six of the Gallagher Premiership promises to deliver another thrilling weekend of action, with teams looking to solidify their positions ahead of a break before the Test rugby returns in November.
Saracens have confirmed the signing of Harry Wilson from Doncaster - a move first report by RugbyPass at the start of the month.
RFU Championship 2023/24 Dream Team forward Harry Wilson is on the verge of securing a move to Saracens.
Mark McCall's men exacted the perfect revenge mission on Leicester Tigers as the reigning champs were eviscerated
The Premiership season is drawing to a close which means numerous players are getting ready to join new clubs over the summer break. Plenty of transfers have already been confirmed across the league.