They immediately won the Dutch amateur championship after defeating CBV Binnenland in the league final.[4] In 2012, Apollo club decided to enter the professional Dutch Basketball League (DBL) for the 2012–13 season.[5] In its first season, led by coach Tyrone Marioneaux and All-Star Aron Royé, Apollo finished in ninth place in the DBL.During Apollo's most successful season since their establishment, the club had financial problems which made it close to withdrawing from the DBL.However, in a packed Apollohal, Leiden retrieved home advantage and went on to beat Apollo 1–2 and advance to the semifinals.