One of the first of several netminders in our series.
The Top 25 Under 25 is a collaboration by Mile High Hockey staff members. Six writers have ranked players under the age of 25 in the Colorado Avalanche organization as of September 1, 2025. Now, we’ll count down each of the 25 players ranked (plus one Honorable Mention).
One of the newest Colorado Avalanche prospects is a recent contract signing which flew under the radar. It was when 23-year-old goaltender Isak Posch inked a two-year Entry Level Contract with the organization on March 26th of this year. After a successful two years at St. Cloud State, Posch was ready to turn pro and Colorado needed to shore up depth in net for the upcoming season.
Posch began his honing his craft in Sweden, where he was born, playing in the Leksands system. However, in 2021 at 19-years-old he crossed the pond to play in the USHL for Sioux Falls, which is where the Avalanche likely first noticed him. After a year there Posch played a season in the NAHL before beginning his NCAA career with the Huskies. In 2024-25 Posch put up a very solid 2.40 Goals Against Average and .923 Save Percentage with a 12-10-0 record as the starter for St. Cloud State, which earned him a NHL contract offer from Colorado.
@SCSUHuskies_MH‘s Isak Posch (4x this year)
Posch led #NCHChockey with 7⃣6⃣ saves and a .950 save % in a split at Denver, while posting a 2.01 GAA! ♂️
: https://t.co/N2YnzmHPLR@KJ_Branding // #HuskyHockey pic.twitter.com/tvSjLQGiVI
— The NCHC (@TheNCHC) March 4, 2025
To end the season Posch joined the Colorado Eagles, mostly to practice and get used to life as a pro but he did get in one game before the end of the AHL regular season. That start didn’t go so well as Posch gave up six goals on 38 shots in a wild 7-4 loss to Tucson. He likely wasn’t ready for the AHL game just yet, which is why the most logical place for Posch is to start with the Utah Grizzlies in the ECHL for the 2025-26 season.
The low rank in our series is likely due to unfamiliarity with Posch but what led to higher ranks from some of our writers is due to the fact that he currently holds a NHL contract. Several players ranked ahead of him in this series have an uphill battle to ever play for the Avalanche organization so Posch already has a leg up. He has the ideal size at six-foot-three to have a long pro career and hopefully if he’s able to refine some of his upside Posch could become a mainstay in net for the Eagles or possibly more.