Serie A, also called Serie A TIM due to sponsorship by TIM, it's a professional league competition for football clubs located at the powerful of the Italian football league system and the winner is awarded the Coppa Campioni d'Italia. It has been operating for over eighty years since the 1929–30 season .
Serie A
Founded : 1898; 120 years ago (officially) 1929 (as round-robin)
Country : Italy
Number of teams : 20
Level on pyramid : 1
Relegation to : Serie B
Most championships : Juventus (34 titles)
Most appearances : Paolo Maldini (647)
Top goalscorer : Silvio Piola (274 goals)
source
Official match ball
2007–2008: Nike T90 Aerow II
2008–2009: Nike T90 Omni
2009–2010: Nike T90 Ascente
2010–2011: Nike T90 Tracer
2011–2012: Nike Seitiro
2012–2013: Nike Maxim
2013–2014: Nike Incyte
2014–2017: Nike Ordem
2018–2019: Nike Merlin
Format :
18 clubs: 1929–1934
16 clubs: 1934–1943
20 clubs: 1946–1947
21 clubs: 1947–1948
20 clubs: 1948–1952
18 clubs: 1952–1967
16 clubs: 1967–1988
18 clubs: 1988–2004
20 clubs: 2004–2018