Clubs from Turkey, North Macedonia, Hungary and Italy had their representatives in WABA League in past seasons.

In its first season, it included six teams from four countries (Austria, Slovenia, Croatia and Bosnia and Herzegovina).

After the regular season, it held a tournament in which the three best teams played, which was won by Athlete Celje.

In the 2012–13 season, the league included the Hungarian PEAC-Pécs, and the Belgrade Partizan achieved a record in its history, playing 32 matches in the national competitions (regional league, championship and cup) all season without suffering a defeat.

League 6 plays a dual circuit system (one game at home and one away) against teams that have qualified from the opposite group previous stage of the competition.

[2] In the season 2012–13, the Cadet League was launched, and since it has shown a lot of success in that period, it has continued to be held.

[5] In the third seasonis the champion was the team of Triglav Kranj, Slovenia, which is defeated in the final match of Maribor.