Professional football in Canada
Only one professional football league has a permanent presence in Canada: the Canadian Football League (CFL), an organization founded in 1958 to accommodate the ongoing trend of professionalism in the Canadian football ranks since the 1940s. The CFL, like most amateur Canadian football leagues, plays on a larger field using a rulebook with several significant rule differences compared to the game as it is played in the United States. The league is composed of two divisions and nine teams in most of the largest Canadian markets, with at least one team in each province between British Columbia (BC Lions) and Quebec (Montreal Alouettes) inclusive. The only presence in Atlantic Canada is a semi-regular series of games in Moncton (Touchdown Atlantic) and a smattering of earlier preseason contests. The CFL operates a two-week preseason beginning in June, an 18-game season from July to October, and a six-team playoff tournament, culminating in the Grey Cup on the fourth weekend of November.
Professional football (gridiron)
Canada has historically been sheltered from the rival leagues that the NFL faced for most of its first century of existence. John F. Bassett, a Canadian multimedia heir, was at the center of two attempts to bring the rival leagues to Canada, first with the Toronto Northmen in the WFL, then with a USFL team in Hamilton, Ontario. In both cases, Canadian Parliament threatened to pass the Canadian Football Act, a proposed law that would have codified the CFL's monopoly on football and outlawed any other professional league from playing in the dominion. (In each case, Bassett instead backed a U.S.-based team, the Memphis Southmen and Tampa Bay Bandits, respectively). The Act was never passed or made law.