Kolosov posted a 15-save shutout in AHL Lehigh Valley's 3-0 win over Hamilton on Friday.
Kolosov has two shutouts and a 3-4-0 record over eight games this season. He's posted a 3.20 GAA and an .883 save percentage, which shows both his potential and his consistency. Kolosov is likely to stay in the AHL since Dan Vladar and Joseph Woll have done well enough for Philadelphia.