Geertsen was placed on waivers by the Sabres on Friday for the purpose of assignment to AHL Rochester.
Geertsen made the Sabres' Opening Night roster last year but made just five regular-season appearances at the NHL level before being sent to the AHL in November, where he remained for the remainder of the season. He'll head back to Rochester to begin the 2026-27 campaign, assuming he clears waivers.