20 clubs: 2004—present patch During the season, which runs from August to May, each club plays each of the other teams twice; once at home and once away, totalling 38 games for each team by the end of the season | The two halves of the season had exactly the same order of fixtures until the , when an asymmetrical calendar was introduced, following the format of the , , and leagues |
---|---|
The club is also the only one in the world to have won all possible official | Since , however, there have been 20 clubs in total |
One season 1947—48 was played with 21 teams for political reasons, following post-war tensions with Yugoslavia.
Bologna won the play-off 2—0 | In the second half of the season, called the ritorno, the teams play another 19 games, once more against each opponent, in which home and away matches are reversed |
---|---|
Higher number of goals scored• Unlike UEFA, Serie A at first did not cap the number of players in first team squad at 25, meaning the club could employ more foreigners by increasing the size of the squad | For example, joined via in 2005, as at the time Romania was not a member of the EU |
Sixth most successful European club for confederation and FIFA competitions won with eleven titles.
23