Craig Gilroy returns to the Ulster starting XV for their Guinness Pro12 clash with Ospreys as Les Kiss makes just one change to the side that beat Leinster.

Ireland winger Gilroy was a late withdrawal last week and comes in for Rory Scholes, who is not included in the match-day 23.

A bonus-point win in Wales (kick-off 3.0pm) would guarantee Ulster a play-off spot, and also give them an outside chance of that game being in Belfast.

Anything less and they will be looking at other results to confirm their place in the last four, although fellow contenders Scarlets face a difficult trip away to Munster.

Ulster: J Payne, A Trimble, L Marshall, S McCloskey, C Gilroy, P Jackson, R Pienaar; C Black, R Best (capt), R Lutton, P Browne, F van der Merwe, I Henderson, C Henry, S Reidy.

Replacements: R Herring, K McCall, A Warwick, R Diack, R Wilson, P Marshall, S Olding, D Cave.

Munster head coach Anthony Foley names an unchanged line-up for their game with the Scarlets at Thomond Park (3.0pm).

It is the first time this season that the Reds have been able to go with the same XV. Last week they beat Edinburgh 27-19 in Cork.

A win would guarantee Foley’s side a Champions Cup place next season.

Prop Dave Kilcoyne will win his 100th cap for the province.

Munster: Simon Zebo, Andrew Conway, Francis Saili, Rory Scannell, Keith Earls, Johnny Holland, Conor Murray; Dave Kilcoyne, Niall Scannell, Stephen Archer, Dave Foley, Billy Holland, Dave O’Callaghan, Tommy O’Donnell, CJ Stander (capt).
 
Replacements: Mike Sherry, James Cronin, John Ryan, Robin Copeland, Jack O’Donoghue, Duncan Williams, Ian Keatley, Ronan O’Mahony.

Ireland internationals Eoin Reddan, Jordi Murphy and Mike Ross are among four changes to the Leinster team for their game against Treviso at the RDS (3.0pm).

Second row Mick Kearney also comes in to the side that was beaten by Ulster in Ravenhill last week.

Reddan replaces Luke McGrath at scrum-half, Ross comes in for Tadhg Furlong, while Murphy and Kearney replace Josh van der Flier and Hayden Triggs respectively.

Leinster: Rob Kearney, Isa Nacewa (capt), Garry Ringrose, Ben Te'o, Dave Kearney, Johnny Sexton, Eoin Reddan; Jack McGrath, Richardt Strauss, Mike Ross, Devin Toner, Mick Kearney, Rhys Ruddock, Jordi Murphy, Jamie Heaslip.

Replacements: Sean Cronin, Peter Dooley, Tadhg Furlong, Ross Molony, Dominic Ryan, Luke McGrath, Cathal Marsh, Noel Reid.

Kieran Marmion is one of nine personnel changes made by Connacht head coach Pat Lam for the sold-out Sportsground clash against Glasgow (3.0pm) that will decide a home play-off spot.

Bundee Aki and Matt Healy have both returned from injury to take their place in a back line that also sees the re-introduction of internationals Robbie Henshaw at centre and AJ MacGinty at out-half.

The league's most capped player John Muldoon returns to captain the side at No 8 behind a second-row partnership of Ultan Dillan and Aly Muldowney.

Finlay Bealham, the only player to have featured in all 28 games so far this season, is named to start at tighthead prop.

Connacht: Tiernan O'Halloran, Niyi Adeolokun, Robbie Henshaw, Bundee Aki, Matt Healy, AJ MacGinty, Kieran Marmion; Ronan Loughney, Tom McCartney, Finlay Bealham, Ultan Dillane, Aly Muldowney, Sean O'Brien, Jake Heenan, John Muldoon (capt).

Replacements: Dave Heffernan, JP Cooney, Rodney Ah You, Quinn Roux, Eoin McKeon, John Cooney, Shane O'Leary, Peter Robb.