High Quality Content by WIKIPEDIA articles! The 2011 Heritage Classic was a regular season outdoor National Hockey League (NHL) game between the Montreal Canadiens and the Calgary Flames. The game was played at McMahon Stadium in Calgary, Alberta, Canada on February 20, 2011. The Flames defeated the Canadiens by a score of 4–0 before a crowd of 41,022 spectators. It was just the second time in six NHL outdoor games that the home team won.