Munster and Ulster are both away from home in the Pro12 this afternoon.
Munster face Glasgow at 2:40pm
While Ulster are in Wales to meet the Ospreys at 5:15pm.
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Last night, Leinster moved alongside Munster at the top of the table on 32 points - when they recorded a 21-11 victory over Connacht at the RDS.
Shane Jennings in the first half and Zane Kirchner late in the game touched down for tries for Matt O'Connor's side.