After this weekend there is a strong 14 points that separates Leinster at the top of the leader board from Welsh side Ospreys who narrowly beat Edinburgh this weekend.
During a busy Six Nations, the Celtic and Italian sides are in action this weekend, with squads being stretched due to the unavailablity of international stars.
Munster scraped through in Cardiff this evening by the narrowest of margins, a margin which could have been larger had Ronan O'Gara's been as impeccable as it usually is