During the 1991-92 season, the Red Wings took on the Bruins at the old Boston Garden in a heated battle between the two teams.
The game had many brawls displacing these two teams' historic rivalry. At the end of the game, as Steve Yzerman was exiting the ice, a fan leaned over the glace and punched him in the face.
The fan, leaning over the railing that overlooked the pathway to the Red Wings' dressing room, struck Yzerman in the face with a punch. - Brady
This clip shows how over the top some fans can get when it comes to sports even after the game is done.