Canadian Football League
The regular season is 21 weeks long, with games beginning in mid-June and finishing by early November. The CFL's nine current teams are divided into two divisions: the East Division with four teams and the West Division, with five teams. Each team plays two games against each of the other eight teams, plus two divisional games with opponents rotating each season. With 18 regular season games being played, each team gets three bye weeks.
Major professional sports leagues in the United States and Canada
The National Hockey League is the only one of the major leagues to have been founded in Canada. It was formed in 1917 as a successor to the Canadian National Hockey Association (founded 1909), taking all but one of the NHA's teams. The NHL partially absorbed the rival World Hockey Association in 1979. There are 31 teams, with 24 in the U.S. and seven in Canada; the league will expand to 32 teams with the entry of a Seattle team in 2021.