LEINSTER have to travel for three out of their four final PRO12 League matches, while second-placed Munster will play three of them at home at Thomond Park.
At the moment, Leinster hold an eight-point lead over Munster with The Ospreys and Glasgow Warriors in place to make the semi-finals.
A defeat in Limerick would throw Leinster's first seeding into some doubt, especially with what could be a shortage of cover at tight-head prop given the slings and arrows suffered by Nathan White and Jamie Hagan against the Ospreys on Friday night and the prospect of away dates at Ulster and the Dragons on the horizon.
Overall, there are seven clubs within reach of the PRO12 play-offs. Ulster, The Scarlets and Leinster's Heineken Cup quarter-final opponents the Cardiff Blues are still alive.
Next Friday, Cardiff are in Glasgow and defeat could spell the end of their interest unless they can do to the Warriors what The Ospreys did to Leinster.
Ulster are right bang in the mix with coach Brian McLaughlin sure to demand a five-point haul at home to bottom club Aironi at Ravenhill, also on Friday night.
RaboDirect PRO12 Remaining Games:
Leinster (64pts): v Munster (a); Edinbugh (h); Ulster (a); Dragons (a).
Munster (56): v Leinster (h); Warriors (h); Scarlets (a); Ulster (h).
Ospreys (53): v Treviso (h); Blues (a); Dragons (h); Aironi (a).
Warriors (51): v Blues (h); Munster (a); Treviso (a); Connacht (h).
Ulster (50): v Aironi (h); Connacht (a); Leinster (h); Munster (a).
Scarlets (50): v Edinburgh (a); Aironi (a); Munster (h); Blues (h).
Blues (45): v Warriors (a); Ospreys (h); Edinburgh (h); Scarlets (a).
As Things Stands RaboDirect PRO12 Semi-finals would be ....
Leinster v Warriors
Munster v Ospreys