Neil Doak forced into double change after injury hits Andrew Trimble and Dan Tuohy ahead of Ulster clash with Scarlets
Ulster head coach Neil Doak has been forced to make two changes ahead of this afternoon's visit to west Wales for a meeting with Scarlets.
Andrew Trimble will once again cut a frustrated figure as he misses out with a hip flexor strain.
The 58-times capped wing made his first Ulster appearance since October in last weekend's big win over the Ospreys but is not fit enough to take his starting spot today.
After missing out on World Cup selection for Ireland, primarily due to doubts over his fitness, it is another blow for a player who was hoping to show Joe Schmidt that he was ready for action if required.
As a result of the knock picked up by the 30-year-old, Craig Gilroy switches from left wing to right and Rory Scholes comes into the starting line-up.
Like Trimble, Dan Tuohy suffered World Cup disappointment this summer and he is the other man that started last week who will miss out this afternoon.
His place alongside Franco van der Merwe in the engine room is taken by Peter Browne, the 27-year-old signed this summer from London Welsh and who has looked a solid acquisition during his brief appearances in an Ulster shirt.
Elsewhere in the pack, it is unchanged up front and in the back-row.
Andrew Warwick is again at loose-head, although last season's starter Callum Black is fit enough for a place on the bench.
Rob Herring continues to captain the side and starts at hooker in the absence of Rory Best while Wiehahn Herbst is at tight-head and hoping for a less stressful outing at scrum-time than he endured against the Ospreys.
Robbie Diack is again available for selection although must make do with a place among the replacements as Doak sticks with the loose-forward trio who succeeded in the season opener.
Despite suffering a foot injury during pre-season, and dealing with a nasty cut to the chin last week, Roger Wilson remains at blindside flanker with Willie Faloon on the openside.
Nick Williams, after getting through just under an hour in his first game since March eight days ago, will be looking to make a similar impact at the Parc y Scarlets.
As expected, Peter Nelson continues at No.10 with Paul Marshall providing the service from scrum-half.
Luke Marshall and Stuart McCloskey are once more the preferred centre pairing while Louis Ludik starts at full-back.
The bench has a more rounded look this week after last Friday's enforced six and two split between forwards and backs saw hooker John Andrew, again handed the No.16 jersey, end the game residing on the wing.
While that experiment ultimately proved successful, Andrew providing a key contribution in the build-up to Luke Marshall's bonus-point clinching try, Doak will no doubt feel better having specialists at his disposal.
David Busby, the Irish Under-20 outside back, will make his Ulster debut if called upon while David Shanahan and Sam Arnold are also among the replacements.
Tight-head prop Ricky Lutton and flanker Clive Ross again round out the bench.
Scarlets coach Wayne Pivac has named an unchanged starting side from the one that ended Glasgow Warriors' 20-game unbeaten home run in the PRO12 last weekend.
Pivac commented: "It's very early days, but Ulster certainly put on a very good performance at home last weekend and, on the evidence of that, while the Rugby World Cup is on, they'll still be a very strong side and one of the leaders."