High Quality Content by WIKIPEDIA articles! The Greater Metro Junior A Hockey League (GMHL) is a Canadian Developmental Junior "A" ice hockey league. The GMHL is not affiliated with the Canadian Junior Hockey League or a member by Hockey Canada. The league has teams in the Greater Toronto Area, Central Ontario, Northeastern Ontario, New York, and Quebec. As of May 2012, the league`s alumni page lists 195 players from 2006-2012 who left the GMHL to play for NCAA colleges, various professional leagues, major junior teams, or represented their country in various IIHF World Championships.