Kolosov posted a 16-save shutout in AHL Lehigh Valley's 2-0 win over Belleville on Sunday.
Kolosov has gone 2-2-0 with 10 goals allowed on 110 shots over four games to start the AHL campaign. The 24-year-old goalie is unlikely to see much NHL time this season unless Dan Vladar or Joseph Woll get hurt.