Major League Soccer is a men's professional soccer league sanctioned by the United States Soccer Federation which represents the sport's highest level in the United States. The league comprises 24 teams—21 in the U.S. and 3 in Canada and constitutes one of the major professional sports leagues in both countries. The regular season runs from March to October, with each team playing 34 games; the team with the best record is awarded the Supporters' Shield. Fourteen teams compete in the postseason MLS Cup Playoffs through October and November, culminating in the championship game, the MLS Cup. MLS teams also play in domestic competitions against teams from other divisions in the U.S. Open Cup and in the Canadian Championship. MLS teams also compete against continental rivals in the CONCACAF Champions League. Major League Soccer was founded in 1993 as part of the United States' successful bid to host the 1994 FIFA World Cup. The first season took place in 1996 with ten teams. MLS experienced financial and operational struggles in its first few years: the league lost millions of dollars, teams played in mostly empty American football stadiums, and two teams folded in 2002.