Munster make two changes for the trip to Italy with Marcus Horan & Frankie Sheahan having to withdraw while Gary Longwell returns to Ulster and Connacht bring in Conor McPhilips for their trip to France.
Ulster (v Stade Francais). 15 - Bryn Cunningham 14 - James Topping 13 - Seamus Mallon 12 - Paul Steinmetz 11 - Tyrone Howe 10 - David Humphreys 9 - Neil Doak 1 - Robbie Kempson 2 - Matt Sexton 3 - Rod Moore 4 - Matt McCullough 5 - Gary Longwell 6 - Andy Ward captain 7 - Neil McMillan 8 - Roger Wilson
Replacements: 16 - Simon Best, 17 - Paul Shields, 18 - Matt Mustchin, 19 - Neil Best, 20 - Kieran Campbell, 21 - Adam Larkin, 22 - Paddy Wallace
Full Details at: www.ulsterrugby.ie
Munster. (v Bennetton Treviso, Saturday, 1.30 pm (Irish time). Shaun Payne; John Kelly, Mike Mullins, Rob Henderson, Anthony Horgan; Ronan O'Gara, Peter Stringer; Gordon McIlwham, Frank Sheahan, John Hayes; Donncha O'Callaghan, Paul O'Connell Jim Williams capt, David Wallace, Anthony Foley.
Replacements: James Blaney, Simon Kerr, David Pusey, Stephen Keogh, Eoin Reddan, Jeremy Staunton, Jason Holland.
Full Details at: www.munsterrugby.ie
Meanwhile, Connacht head down to the south of France this weekend for the third time in seven weeks for a quarter-final clash with Narbonne in the Parker Pen European Challenge Cup.
Conor McPhillips returns to the side on the left-wing with Ted Robinson named among the replacements, while scrum-half Conor O'Loughlin comes back into the squad on the bench in place of Chris Keane as part of Connacht's rotation policy.
Connacht: (v Narbonne): M. McHugh, M. Mostyn, D. Yapp, T. Allnutt (capt.), C. McPhillips, E. Elwood, M. Walls, D. McFarland, B. Jackman, A. Clarke, D. Browne, A. Farley, M. Swift, M. Lacey, J. O'Sullivan.
Replacements: J. Fogarty, W. O'Kelly, M. McCarthy, T. Carter, C. O'Loughlin, D. Hewitt, C. McPhillips.
Full Details at: www.connachtrugby.ie