Victor Mateo is scheduled to be Montgomery's Opening Day starter Thursday against Birmingham.
After Mateo, the Biscuits' planned rotation goes Dylan Floro, Jared Mortensen, Michael Colla and Grayson Garvin.
Mateo is the only one of the five planned starters who was with the Biscuits at the beginning of last season. Colla joined the team in early June. The other three ended last season at high-Class A Charlotte and are making their Double-A debuts.