<P> To celebrate the NHL's 100th year in 2017, the league is having two special outdoor games . The first, branded as the Centennial Classic, between the Detroit Red Wings and Toronto Maple Leafs, was held on January 1 (during the 2016--17 NHL season) to kick off the year . The second, branded as the NHL 100 Classic, was held on December 16 (during the 2017--18 season) between the Montreal Canadiens and the Ottawa Senators . </P> <P> As of the conclusion of the end of the 2017 - 18 season: </P> <Ul> <Li> 23 of the NHL's 31 teams will have participated in an outdoor regular - season game . The eight that have not are Arizona, Carolina, Columbus, Dallas, Florida, Nashville, Tampa Bay and Vegas . </Li> <Li> 12 teams will have played more than one game . </Li> <Li> Chicago will have made the most appearances (5). </Li> <Li> 19 metropolitan areas (out of 28 represented among the league's 31 teams) will have hosted the 25 outdoor regulation games . In addition to the eight metropolitan areas represented by teams that have not played in any outdoor games, Montreal has played in outdoor games but has yet to host any themselves (although New Jersey has also not yet hosted a home game in its home state, its home city of Newark is still part of the New York metropolitan area .) </Li> <Li> New York City will have hosted three times . Chicago, Massachusetts, Maryland--DC, and Pittsburgh will have each hosted twice . </Li> <Li> Yankee Stadium and Heinz Field will have each hosted two games . </Li> <Li> No non-NHL (neutral site) market has yet hosted a regular season outdoor game . Notre Dame, Indiana will be the first non-NHL market to host an outdoor game when it hosts the 2019 Winter Classic . </Li> </Ul> <Li> 23 of the NHL's 31 teams will have participated in an outdoor regular - season game . The eight that have not are Arizona, Carolina, Columbus, Dallas, Florida, Nashville, Tampa Bay and Vegas . </Li>

Who has played in the most outdoor nhl games