Kolosov made 19 saves on 21 shots in a 3-2 overtime win over Chicago on Saturday.
Kolosov and the Flyers spotted the Blackhawks a 2-0 lead through two periods before earning a comeback victory. The 22-year-old netminder posted his first NHL win after losing four outings this season. He has a 3.34 GAA and an .877 save percentage through five appearances with Philadelphia in 2024-25.