The Lega Nazionale Professionisti Serie B (Italian for National League of Professionals Serie B), commonly known as Lega Serie B (Serie B League), is the governing body that runs the second tier of professional football competitions in Italy, the Serie B. It was founded on 7 July 2010, following a split between Serie A and Serie B clubs, which led to the dissolution of the Lega Calcio and creation of two new leagues, the Lega Serie A and Lega Serie B respectively. Since April 2011, Lega Serie B has joined the European Professional Football Leagues association.