Kolosov was loaned to AHL Lehigh Valley on Sunday.
Kolosov posted a 15-21-2 record with a 2.98 GAA and an .895 save percentage across 38 appearances for AHL Lehigh Valley during the 2025-26 regular season. Kolosov's demotion to the minors likely bodes well for Dan Vladar's (upper body) availability for Opening Night against Pittsburgh on Wednesday.