Ulster winger Craig Gilroy has been ruled out of the key Guinness PRO12 clash with Munster at the Kingspan Stadium on Saturday (2.4pm kick-off) after picking up a hamstring injury in training.
The PRO12’s current top try scorer, Gilroy is replaced on the left wing by Peter Nelson in the only change from the side which beat Leinster in Belfast two weeks ago.
It is the only change Neil Doak had to make to his side for the visit of Provincial rivals Munster.
The sides are locked in a huge battle to take a home semi-final having already qualified for this season’s league play-offs. Munster are currently a point ahead of Ulster in second and third places respectively.
Glasgow lead the standings but were due to play fourth place Ospreys in Swansea on Friday night, with much at stake in that fixture for all top four sides.
Ulster’s Roger Wilson will become Ulster’s most capped PRO12 player when he plays on Saturday, making 132 appearances passing the previous record held by Paddy Wallace who retired last season. Wallace remains Ulster’s all time capped player, with Andrew Trimble still one short of equalling his record of 189.
The Munster starting team shows three changes, with Paul O’Connell returning to partner Donnacha Ryan at lock.
Hooker Eusebio Guinazu and centre Denis Hurley also come into the line-up.
Guinazu comes in for Duncan Casey, as the Argentinian international packs down with Dave Kilcoyne and Stephen Archer.
The unchanged back row of captain Peter O’Mahony, Tommy O’Donnell and CJ Stander complete the pack, with Hurley joining Andrew Smith in midfield.
Ulster: L Ludik; T Bowe, J Payne, D Cave, P Nelson; P Jackson, R Pienaar; C Black, R Best (capt), W Herbst, D Tuohy, F van der Merwe, I Henderson, C Henry, R Wilson.
Replacements: R Herring, A Warwick, B Ross, R Diack, C Ross, P Marshall, I Humphreys, S McCloskey.
Munster: F Jones; K Earls, A Smith, Denis Hurley, S Zebo; I Keatley, C Murray; D Kilcoyne, E Guinazu, S Archer; D Ryan, P O’Connell; P O’Mahony (capt),T O’Donnell, CJ Stander.
Replacements: Duncan Casey, John Ryan, BJ Botha, Billy Holland, Jack O’Donoghue, Duncan Williams, JJ Hanrahan, Ronan O’Mahony.