Munster moved up to third in the URC standings last night.
A brace of tries from Gavin Coombes helped Clayton McMillan's side to a 22-20 win over Dragons at Virgin Media Park.
Connacht and Leinster contest a sold-out interpro derby this evening.
Caolin Blade and Josh Ioane are back for the Westerners, with Ireland centre Bundee Aki left on the bench.
Caelan Doris captains Leinster in his 100th appearance for the visitors to Dexcom Stadium, which sees the opening of its new Clan Stand.
Kick-off in Galway is at half 5.
Ulster can consolidate their place in the top four with a win away to the Scarlets from 3.
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The race for the play-offs heats up in the Division One A of the Energia All-Ireland League this afternoon.
Third-place Terenure make the trip to sixth-place Young Munster, with just four points between them ahead of the half-2 kick-off.
At the same time, it's top against bottom at Castle Avenue with leaders Clontarf hosting Nenagh Ormond.
UCD go up against Lansdowne, while Old Belvedere play Cork Con.
At 3 o'clock, St Mary's College take on Ballynahinch.
