The SuperLiga is an official North American football competition between teams from the Primera Division of Mexico and Major League Soccer of the United States and Canada, the top divisions in each country. The competition is sanctioned by CONCACAF, U.S. Soccer, the Canadian Soccer Association and Federación Mexicana de Fútbol, and serves as the sub-regional championship for the North American section of CONCACAF, much like its Central American and Caribbean counterparts, the Copa Interclubes UNCAF and CFU Club Championship respectively.
The format consists of a group stage, followed by playoffs or "knockout" rounds, with all games held at MLS sites. The tournament had an invitational format for its 2007 debut, with four teams invited from both MLS and the Primera División. For successive tournaments, MLS announced that "the four MLS teams with the best regular season records in 2007 will qualify for SuperLiga 2008". However, after problems of fixture congestion during the 2008 season, Major League Soccer announced that starting with SuperLiga 2009 it will no longer allow teams to compete in both the CONCACAF Champions League and the SuperLiga, so the criteria for MLS teams has been amended to the top four teams not already qualified for the Champions League. For the Primera División, the champions of the last 4 semi-annual tournaments will earn berths to SuperLiga.
Mexican and American teams have been who always play the finals, while Canadian teams get relegated in the early stages of the competition.