The Hamilton Mustangs are a fictional hockey team loosely based on a real life hockey team that did exist in Hamiltion, Ontario and played in the OHL (Ontario Hockey League). That franchise left Hamilton in 1988, and is still playing in the OHL, but is now based in Erie, PA.
In the scene where Ed Lauter is talking to his assistant coach while the players warm up, he mutters "Three Blind Mice" as the referee and linesmen appear on the ice. That term was actually used by players and coaches to describe how badly referees officiate games.
In the fight scene, at end of movie between Racki and Youngblood. Youngblood pulls Racki's jersey over his head onto his arms, then punches Racki to the ice. When Racki is on the ice he isn't wearing his jersey anymore, then when he gets back up, Racki takes his jersey completely off.
In the beginning of the film, when they show Rob Lowe playing as a teen, he is shooting left handed. But Dean is then shown right handed when shooting throughout the rest of the film.
Kelly Youngblood: [walks into barn and sees Dean standing in front of a punching bag]
Just hit it, pillowhands. Don't worry, it's not gonna hit you back.
Murray Chadwick: All right, one period left. One period away from winning it all or losing to these miserable hackers with their shit-eating grins and their Saturday night wrestling tactics. One period away from remembering something for the rest of your life or something you wanna forget.