Major professional sports leagues in the United States and Canada
The Canadian Football League is the highest level of play in Canadian football. The league was organized in 1956 as a cooperative agreement between two regional leagues, the Big Four (which dated to 1907) and the WIFU (which was founded in 1936), and became independent from Football Canada in 1958. The league now consists of nine teams, all based in Canada. The Grey Cup is awarded annually to the champion every November and is the highest attended sporting event in the nation. The oldest extant teams, the Hamilton Tiger-Cats and the Toronto Argonauts, trace their origins to the late 1860s and early 1870s, which ranks them amongst the oldest professional sports teams of any kind still in existence on the continent. The CFL attempted an expansion into the United States in cities that had no NFL team between 1993 and 1995, though the expansion teams all either folded or relocated to Canadian cities.
Professional football (gridiron)
In the long term, the CFL has shown significantly more stability than the American leagues. The league has, for all but three years of its history, had either eight or nine teams, all based in the same nine markets. The league has resisted expanding beyond its current nine teams and has, to date, never moved a Canadian team from one city to another. One particular market that has been a persistent topic of discussion has been the maritime provinces. The CFL approved an Atlantic franchise for Halifax known as the Atlantic Schooners in 1984 provided a stadium with sufficient capacity was built by then; however, no such stadium was ever built (the only outdoor stadium in Halifax, Huskies Stadium, only seated less than half of what CFL rules mandate and has since been demolished). The Touchdown Atlantic series is a series of one-off games that are played in Atlantic region stadiums; the first, a preseason game, was held at Huskies Stadium in 2003. A follow-up game was scheduled for the same venue for 2006, but was canceled due to the Ottawa Renegades (who were to play in the game) folding. The series was revived as a regular season game in 2010, but instead at New Moncton Stadium in Moncton, which is much closer to the CFL's capacity guidelines; three games were played in the regular season series.