 Complete the following phrase:  The NHL primarily uses three brands for outdoor games: the Heritage Classic, Winter Classic, and Stadium Series. The Heritage Classic has been infrequently held five times, and has thus far featured match-ups between Canadian teams. The 2003 Heritage Classic between the Edmonton Oilers and Montreal Canadiens was the first outdoor regular season game in NHL history. This led to the annual Winter Classic, held on New Years Day in the United States, starting with the 