Leinster and Connacht face off at the RDS in what promises to be a gritty derby game.
Ulster travel to Cardiff, who are one place below them in the table, and Munster have the chance of revenge against Dan Parks and the 'Killer Bs'!
The Irish Rugby iPhone App will keep you up-to-date with all the key moments in all three games with our exclusive MatchDay Live service.
The scores, the penalties, the substitutions - all the action from the game in the palm of your hand. So don't miss a minute and download the Irish Rugby iPhone App today.
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