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.
United States Soccer Federation
A fourth-division league in the United States is the USL League Two, which as of 2015 is expected to have 58 U.S. teams, and six Canadian teams. Though League Two does have some paid players, it also has many teams that are made up entirely or almost entirely of college soccer players who use the league as an opportunity to play competitive soccer in front of professional scouts during the summer, while retaining amateur status and NCAA eligibility. Another fourth-division league in the United States is the National Premier Soccer League.