the end of the 2022 season. Competition format Major League Soccer's regular season runs from late February or early March to October. Teams are geographically divided into the Eastern and Western Conferences, playing 34 games in an unbalanced schedule. With 29 teams in 2023, each team plays two games, home and away, against every team in its conference and one game against all but four or five of the teams in the opposite conference. The 2020 season was the first season in league history in which teams did not play against every other team in the league. At the end of the regular season, the team with the highest point total is awarded the Supporters' Shield and home-field advantage throughout the playoffs. Teams break for the annual All-Star Game midway through the season, an exhibition game containing the league's best players. The format of the All-Star Game has changed several times since the league's inception; 2020 was the first year in which the MLS All-Stars were planned to play against an all-star team from Mexico's Liga MX, before the event's cancellation due to the COVID-19 pandemic. Unlike most major soccer leagues around the world, but similar to other leagues in the Americas, the MLS regular season is followed by a postseason knockout tournament to determine the league champion. , eighteen teams participate in the MLS Cup Playoffs in October and November, which concludes with the MLS Cup championship game in early December. Major League Soccer's spring-to-fall schedule results in scheduling conflicts with the FIFA calendar and with summertime international tournaments such as the World Cup and the Gold Cup, causing some players to miss league matches. While MLS has looked into changing to a fall-to-spring format, there are no current plans to do so. Were the league to change its schedule, a winter break would be necessary to accommodate teams located in harsh winter climates. It would also have to compete with the popularity and media presence of the National Football League (NFL), National Basketball Association (NBA), and National Hockey League (NHL), which all run on fall-to-spring schedules. On February 21, 2023, the MLS announced a new playoff format which "will see the addition of a pair of single-elimination Audi MLS Cup Playoffs Wild Card matches ahead of an enhanced Round One, which now includes a Best-of-3 series". Other competitions MLS teams also play in other international and domestic competitions.