The 1969/70 season is the fourth season of the Basketball Bundesliga . The top division in German men's club basketball, until 1990 limited to the area of West Germany without the GDR , was played in two regional groups, North and South, and identified the first eight participants in the final round of the German Championship.
As an innovation, the first four teams in the regional groups qualified for two final groups, in which in the round-robin tournament mode, two teams from a regional group played in a final group according to the placements in the main round, with the "odd" placed teams on the " even " placed teams of the met another regional group. The two group winners in the final round went straight to the final of the German championship without a semi-final. In the final game in the sports hall in Dillingen / Saar to a duel between runner-up MTV 1846 Gießen and last year's promoted TuS 04 Leverkusen. The later record champions TuS 04 won his first title with a narrow 76:73 victory over MTV, which lost the second final in a row. One month later, TuS 04 also clearly won the cup competition in the final in Braunschweig against previous year's champions VfL Osnabrück and completed the double and a “ perfect season ” without defeat.