The 2009–10 Serie A (known as the Serie A TIM for sponsorship reasons) was the 108th season of top-tier Italian football, the 78th in a round-robin tournament. There were three promoted teams from the Serie B, replacing the three teams that were relegated following the 2008–09 season. Nike provided a new match ball – the T90 Ascente – for this season. Following the season, citing a larger television contract, the seventeen teams that survived the season and the three promoted sides formed a new league akin to England's Premier League.