Complex sentence: It is one of nine Oberligas in German Football, the 4th tier of the German football league system.It's traditional sister leagues and rivals are the Oberliga Hessen and the Oberliga Baden-Württemberg.
Split into simpler sentences: It is one of nine Oberligas in German Football, the 4th tier of the German football league system. Its traditional sister leagues and rivals are the Oberliga Hessen and the Oberliga Baden-Württemberg.