Ian Humphreys, who also went off injured against Cardiff, has responded well to treatment and should be available for selection this week. The squad is otherwise as expected, although young halfbacks Blane McIlroy and James McKinney have been included.
Both sides go into the game unbeaten and are locked on 12 league points, just one behind leaders Munster. The Ulster's only defeat in their last nine matches against Welsh opponents was in the equivalent game at Liberty Stadium last season when they narrowly lost 23-22.
Ulster Squad Forwards
Jerry Cronin, Paddy McAllister, Declan Fitzpatrick, Adam Macklin, Andi Kyriacou, John Burns, Nigel Brady, Tim Barker, Lewis Stevenson, Dan Tuohy, Neil McComb, Pedrie Wannenburg, Mike McComish, Chris Henry, Willie Faloon, Robbie Diack
Ulster Squad Backs
Paul Marshall, Blane McIlroy, Ian Porter, Ian Humphreys, Paddy Jackson, James McKinney, Luke Marshall, Nevin Spence, Ian Whitten, Craig Gilroy, Conor Gaston, Jared Payne, Adam D'Arcy
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