Washington acquired Poirier from New Jersey on Sunday in exchange for a 2027 seventh-round pick.
Poirier didn't log any playing time with the Devils after being claimed off waivers from Dallas on Sept. 27. The 25-year-old netminder is still waiting to make his NHL debut. He posted a 27-19-6 record, a 2.61 GAA and a .912 save percentage in 52 AHL regular-season appearances for Texas in 2025-26.