The Lega Basket Serie A, officially abbreviated as LBA, (English: Serie A Basketball League) is a professional men's club basketball league that has been organised in Italy since 1920, run by Lega Basket, which is regulated by the Federazione Italiana Pallacanestro (FIP, Italian Basketball Federation). It is the highest-tier level of the Italian league system. The LBA plays under FIBA rules and currently consists of 17 teams, with the lowest-placed team relegated to the Serie A2 and replaced by the winner of the play-offs of that tier.