Overview of the number of teams which have participated from season to year. Desk four. Number of participating groups Seasons Associazione Calcio Milan or AC Milan are Serie A's 2nd most successful club. Also with 19 championships, They are 1 season faraway from introducing a next star for their crimson https://davea974ost5.techionblog.com/35481879/a-review-of-what-is-serie-a