Leinster were held to a thrilling 24-24 draw in their Guinness PRO12 match against Treviso on Sunday.
Ulster ended Ospreys’ 100 per cent record in this season’s Guinness Pro12 with a 25-16 victory at a rain-soaked Kingspan Stadium.
Munster moved up to third in the Guinness Pro12 with a bonus-point 38-12 victory over Newport Gwent Dragons.
Leinster welcome back Jordi Murphy and Dave Kearney for the weekend trip to Treviso, which is live on Sky Sports 2 HD.
Ireland captain Paul O'Connell says there is nothing to reports linking him with a move to French club Pau.
Connacht claimed a comfortable 43-3 bonus-point victory over second-from-bottom Zebre at the Sportsground.
Table-topping Ospreys aim to continue their perfect start to the Guinness PRO12 season when they travel to Ulster.
Joe Schmidt says Chris Henry can still play for Ireland in the Six Nations despite suffering a brain injury.
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