Promotion and relegation is used by sports leagues as a process where teams can move up and down among divisions in a league system, based on their performance over a season. Leagues that use promotion and relegation systems are sometimes called open leagues. In a system of promotion and relegation, the best-ranked team(s) in a lower division are promoted to a higher division for the next season, and the worst-ranked team(s) in the higher division are relegated to the lower division for the next season. During the season, teams that are high enough in the league table that they would qualify for promotion are sometimes said to be in the promotion zone, and those at the bottom are in the relegation zone (colloquially the drop zone or facing the drop). These can also involve being in zones where promotion and relegation is not automatic, but subject to a playoff.
An alternate system of league organization, used primarily in Australia, Canada, the Philippines, Singapore, and the United States, is a closed model based on licensing or franchises. This maintains the same teams from year to year, with occasional admission of expansion teams and relocation of existing teams, and with no team movement between the major league and minor leagues. Some competitions, such as the Belgian Pro League in football or the Super League in rugby league, operate hybrid systems which allow for promotion and relegation between divisions but which allocate this based on a mix of financial and administrative scores with competition performance.
