Leinster are propping up the table having failed to register a win after three games but like Munster they just probably need just a little bit of 'a rub of the green.' The Arms Park is not a great place to go looking for favours but Gary Ella's side might just see their fortunes start to turn around at this famous stadium despite the absence of Gordon D'Arcy who misses out through injury.
Even though Munster have home advantage, they face a formidable task in avoiding a straight fourth defeat with the visit of an Ulster side probably perhaps still smarting from that defeat in the Celtic League quarter final last season.
So that leaves Connacht in the somewhat unusual position of being the best bet of the weekend from an Irish point of view. They've already put one over the Scottish side, winning 26-21 in Netherdale and followed that up with victory in Stradey Park last week to earn themselves a place in the Celtic Cup semi-final.
Round Four - Fixtures
Friday, 10th October.7.05: Cardiff Blues v Leinster Lions, Arms Park, David Changleng (Sco) BBC W/TG47.30: Edinburgh v Llanelli Scarlets, Meadowbank, Gareth Doyle (Irl).br>7.30: Munster v Ulster, Musgrave Park, Nigel Owens (Wal)
Saturday, 11th October.
Sunday, 12th October.2.30: Gwent Dragons v Glasgow Rodney Parade, Simon McDowell (Irl).