the season after the introduction of the Bundesliga: Aftermath After financial irregularities in the 1964–65 season, Hertha BSC Berlin were relegated despite not having finished in a relegation spot. Wishing to continue the league's presence in Berlin, the DFB elevated third-placed Regionalliga side Tasmania 1900 Berlin to the Bundesliga without the side actually having qualified and thereby enlarging the league to 18 teams almost by accident, a format it continued from then on except for one season. In 1991, 28 years after its interception, the Bundesliga finally became a league for all of Germany. After the German reunion, two clubs from the east, FC Hansa Rostock and Dynamo Dresden joined the league for the 1991–92 season and caused a one-off expansion of the league to 20 teams. The 58 top-level Oberliga clubs from 1962 to 1963 that were not selected for the Bundesliga were mostly grouped in the new Regionalligas. Only in Berlin did the bottom two teams, Viktoria 89 Berlin and SC Tegel have to drop from the first to the third tier, while in the Southwest Eintracht Kreuznach also found itself dropping to the Amateurliga. In 1974 another step was taken to professionalise German football when the 2. Bundesliga was established. References Sources 30 Jahre Bundesliga 30th anniversary special, publisher: kicker Sportmagazin, published: 1993 kicker-Almanach 1990 Yearbook of German football, publisher: kicker Sportmagazin, published: 1989, DSFS Liga-Chronik seit 1945 publisher: DSFS, published: 2005 External links DFB – Deutscher Fußball Bund (German Football Association) Bundesliga 1963 establishments in West Germany