Andy McBrine joins Boyd Rankin, Stuart Thompson, David Scanlon and Andy Britton on the list of Warriors absentees for the 50-over clash with the Northern Knights at Stormont on Monday.
There are four new faces in an unfamiliar Warriors line-up, with Brigade's Kyle Magee and Bready's Gregory McFaul joined by Ballyspallen's Brendon Louw and Adam McDaid.
Fox Lodge skipper Aaron Heywood is also recalled following his prolific start to the season.
The teams also face each other in a three-day Championship match at Comber starting on Tuesday, and McBrine returns along with David Scanlon in place of Poskitt and McDaid as the reigning champions start the defence of their crown.
WARRIORS SQUAD v KNIGHTS 50-overs Monday May 27 at Stormont
- William Porterfield (Formby)
- David Rankin (Bready)
- Marcus Poskitt (Bready)
- Graham Hume (Coleraine)
- Aaron Gillespie (Strabane)
- Graham Kennedy (Ballyspallen)
- Brendon Louw (Ballyspallen)
- Craig Young (North Down)
- Ross Allen (Brigade)
- Adam McDaid (Ballyspallen)
- Kyle Magee (Brigade)
- Aaron Heywood (Fox Lodge)
- Gregory McFaul (Bready)