After Leinster's loss on Friday night to Ulster in Belfast, they need to look over their shoulders to stay ahead of Edinburgh and Scarlets.
That's according to Rugby Correspondent with the Irish Independent Ruaidhri O'Connor, who was speaking to Oisin Langan on The Monday Rewind.
Edinburgh and Scarlets are within five points of Matt O'Connor's side ahead of Leinster' game with Edinburgh on the final weekend of games.
Pat Lam's Connacht have lost five league games in a row and speaking on the show, Ruaidhri says the Westerners have been very unlucky with injuries throughout the season which are starting to effect Lam's team.
Ulster and Munster face off in the penultimate round of games in Belfast, in what could be a dress rehearsal for a semi final.
The Northern province will be hoping to reach the final which will be held in the Kingspan Stadium.
Listen to the Pro 12 round up on The Monday Rewind on Newstalk:
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