The professional basketball clubs based in Europe can compete in various competitions. Such include continental tournaments, national leagues, and regional leagues. For that reason, it is quite common to find a club participating in up to three competition levels within the same season. Generally, the performances of clubs in the national leagues count as the qualification for European competitions.
Continental Basketball Competitions
Currently, there are four Europe-wide distinct competitions, two of which are governed by FIBA and the other two by Euroleague Basketball. The highest-profile competition is the Euroleague, which usually involves clubs from either ten or eleven countries. Of the eleven teams which take part in the league, only seven have to qualify for it. Eleven of the clubs have ten-year licenses to participate in the league. The seven qualification spots are reserved for clubs from Liga ACB, LNB Pro A, Bundesliga, Adriatic League, VTB United League, and the finalists of the Euro Cup.
Euroleague basketball also organizes a lower level competition called the Euro Cup. It comprises of 24 teams from all over Europe.
The Basketball Champions League is another continental competition which began in 2016. It ranks at the same level as Euroleague but is organized by FIBA. The league features 32 teams with the clubs coming from more than 20 countries. The secondary competition for FIBA is called the FIBA Europe Cup. The lowest ranking teams of the Champions League are usually relegated to the Europe Cup while the top performers of the Europe Cup are promoted to the Champions League.
The regional leagues involve clubs from several countries. Such include the ABA League, VTB United League, Baltic Basketball League, and Central European Basketball League.
Each of the countries in Europe has its own basketball league system. Most of them use the relegation and promotion systems to keep the league competitive. Some of the leagues include both professional and semi-professional clubs.