[3] Following this, Yager played two seasons with the Saskatoon Contacts in the Saskatchewan Midget 'AAA' Hockey League (SMAAAHL) as an underage player.
[3] Due to the foregoing pandemic, Yager was able to make his major junior debut at the age of 15 without gaining "exceptional player" status.
[6] As a result of his exceptional play, Yager became the first Moose Jaw player to receive the Canadian Hockey League (CHL)'s Rookie of the Year award.
[11] Ahead of the 2023 NHL entry draft, Yager was ranked fourth among all skaters by The Sports Network's Director of Scouting Craig Button.
[13][14] Yager played a key role in the Warriors' deep run in the 2024 playoffs, which saw them defeat the Portland Winterhawks in the WHL Finals to hoist the Ed Chynoweth Cup.
[18] On August 22, 2024, Yager was traded by the Penguins to the Winnipeg Jets in exchange for the signing rights to prospect Rutger McGroarty.
[19] Yager was traded to the Lethbridge Hurricanes on December 2, 2024 alongside teammate Jackson Unger in exchange for three players and a series of draft picks.
[20] As a native of Canada, Yager represented the Canadian men's junior national team at the 2022 Hlinka Gretzky Cup.