The Italian Baseball and Softball Federation (FIBS) announced the subscribed clubs for the 2020 season in the Italian Serie A1 Baseball and the Italian Serie A1 Softball. In Baseball Fortitudo Bologna, Godo, Macerata, Nettuno Baseball City, Parma, Rangers Redipuglia and San Marino subscribed, in Softball Bollate, Bussolengo, Caronno, Caserta, Collecchio, Forlì, Pianoro, Saronno, Sestese and Thunders&Dragons Castellana.