When the league contracted prior to 2009, it combined the its divisions into the current Atlantic Division.

The league then contracted in 2009, which dissolved all divisions in the East except for the Atlantic Division.

In 1949, the league contracted to a single division, so it determined its champion by a four-team single-elimination tournament.

When the league contracted following the 1899 season, Wagner received $39,000 from the league for his interest in the club.

The inaugural BAA season began with 11 teams; the league contracted to 8 teams in 1947-48, then expanded to 12 for 1948-49.

The league contracted to seven teams and the Potomacs players were dispersed to other teams.

Following the inaugural season, the league contracted to 7 teams, as Haydamaky Vinnytsia lacked the funding and proper infrastructure to continue.

Because the league contracted from six to five teams, it was possible for some teams to reacquire players.

The following season, the league contracted to three teams.

However the league contracted the franchise in June 2003.