Corrected entry: The Penguins are the 'Home' team for game 7 of the Cup, but they are wearing their 'Away' uniforms. In the NHL, 'Home' uniforms are dark colored whereas 'Away' uniforms are light or white colored.
Corrected entry: Agent Hallmark makes two appearances after he has already been killed. One minute after the game has been sent into sudden death, we see Hallmark standing outside the stadium, and we see him again near the end when people are running out of the stadium - having already been killed.
Corrected entry: The broadcasters in this movie mention that the game is a sell out, but on certain shots from the broadcast booth, we can see a completely empty balcony in the background.