Posch was recalled from AHL Colorado on Saturday.
Posch will serve as the third goaltender for the Avalanche in the 2026 Stanley Cup Playoffs behind Scott Wedgewood and Mackenzie Blackwood. The 24-year-old Posch posted a 15-8-5 record with a 2.78 GAA and an .891 save percentage in 28 regular-season appearances for AHL Colorado in 2025-26.