The Cale Makar era is about to begin in Colorado.

College hockey's top prospect signed an entry-level contract with the Colorado Avalanche on Sunday and joined the Avs for practice on Monday. He's expected to be inserted into the lineup immediately and will suit up when the Avalanche host the Flames in Game 3 of their opening round playoff series Monday night. 

Makar is expected to slot in alongside Patrik Nemeth on the team's third pairing, and will likely get some power play time as well.

The 20-year-old Canadian defenseman was drafted fourth overall by the Avalanche in the 2017 NHL Entry Draft. He's coming off a sophomore season at UMass Amherst in which he won the Hobey Baker Award as the NCAA's top player and led the Minutemen to their first title game in program history. UMass finished as national runner-up after losing to Minnesota Duluth in the championship on Saturday night.