Niall O'Connor will replace Ian Humphreys at fly-half to face Bath in Ulster's last Heineken Cup pool game on Saturday afternoon at the Recreation Grounds.
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It is Coach Brian McLaughlin's only change to the starting line up which overcame Edinburgh last weekend at Ravenhill.
Ulster are second in Pool Four with 13 points - four adrift of leaders Stade Francais.
Bath currently sit in fourth place behind Edinburgh.
Ulster are in pole position for at least a place in the Amlin Challenge Cup quarter-finals.
Chris Henry will once again captain the Ulster side, in Rory Best's absence.
"This game is like a cup final; it is literally win or bust. We have to go to Bath with confidence because we know from some of our performances and results this season, we need not fear anyone", Chris Henry said.
"It would be a shame to slip up now. If it is not the Heineken Cup we are playing in after this weekend, we have to make sure we are in the Amlin Challenge Cup. To do any of that, we have to win at The Rec."
Ulster Team:
(15 - 9) Jamie Smith, Andrew Trimble, Darren Cave, Paddy Wallace, Simon Danielli, Niall O'Connor, Isaac Boss
(1 - 8) Tom Court, Nigel Brady, BJ Botha, Dan Tuohy, Ed O'Donoghue, Stephen Ferris, David Pollock, Chris Henry (Capt)
Ulster Replacements:
(16 - 23) Andi Kyriacou, Bryan Young, Declan Fitzpatrick, Ryan Caldwell, TJ Anderson, Cillian Willis, Ian Humphreys, Timoci Nagusa
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