Campbell rings the changes for pivotal clash
Ulster A's clash with Leinster A already has the feel of a fixture which could well end up ultimately deciding the destiny of the Celtic Cup in next month's final.
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Both sides have both managed three wins from their opening trio of games, and also collected the same number of bonus point wins, with the southern province sitting top due to a superior differential of points.
And though something must give at Dublin's Energia Park today (3pm), the duo are already six points ahead of nearest chasers Connacht Eagles with, after this weekend, just three rounds remaining before the top two advance to the final.
For Ulster, head coach Kieran Campbell has made six changes to the starting team which defeated Connacht 33-13 last week.
Considerable ballast and experience has been brought into play through the selection of prop Andy Warwick, for his first taste of action this season, and hooker Adam McBurney.
They pack down with try-scoring tighthead prop Peter Cooper.
Graham Curtis and Ethan McIlroy - who both scored for the senior side on their debuts last Saturday - are on both wings, while lock David O'Connor and flanker Marcus Rea, who leads the side, also drop down from the seniors.
Ross Adair moves back to the centre after a stint on the wing to team up again with Hayden Hyde, while Azur Allison and David McCann also switch about in the back row to allow Rea play openside flanker.
Bruce Houston and the impressive Nathan Doak continue at half-back.
ULSTER A: C Rankin, E McIlroy, R Adair, H Hyde, G Curtis, B Houston, N Doak; A Warwick, A McBurney, P Cooper, J Regan, D O'Connor, A Allison, Marcus Rea (capt), D McCann.
Subs: T Stewart, T O'Hagan, P Mullen, M Dalton, A Hall, J Stewart, B Power, L Pollock.