A promotion, used in Sports leagues of most countries outside the USA, means the mandated transfer of the best team(s) of a lower league into a higher league at the end of the season. An equal number of worst team(s) from the higher league endures the opposite procedure, relegation. Compared to the American method, this has the effect of regularly rearranging the leagues according to the teams' playing strength, and also prevents the games of the not-so-good teams of each league from becoming boring towards the end of the season.