Lega Basket Serie A is the highest level club competition in Italian professional basketball where play determines the national champion. The season consists of a home-and-away schedule of 30 games, followed by an eight-team playoff round. Quarterfinals and semifinals series are best-of-five, and the finals series is best-of-seven. The bottom two clubs are relegated, and replaced by the top team from the regular-season phase and the eight-team playoff round winner of the second-level Legadue. The Italian League is one of the 3 "A" level ranked European domestic leagues in the ULEB League Rankings system.