Other mistake: At the last game when Derek flies out of the rink, the crowd is standing quiet and still from shock at what they've seen. When the camera is panning across the crowd, if you look in the right hand side, towards the top, there is a lady with black hair and a red coat waving her arms and looking straight at the camera (like the extra is trying to be seen by family and friends). (01:20:55)
Other mistake: In a hockey game, Derek Thompson slams an opposing player into the wall and knocks out a tooth. Inexplicably, the tooth shoots straight up into the air and there is absolutely no blood on the tooth or around the player's mouth.
Answer: It was all Black Market merchandise. Usually not of any good use; total rip-off.