1972–73 Regionalliga
The 1972–73 Regionalliga was the tenth season of the Regionalliga, the second tier of the German football league system. The league operated in five regional divisions, Berlin, North, South, Southwest and West. The five league champions and all five runners-up, at the end of the season, entered a promotion play-off to determine the two clubs to move up to the Bundesliga for the next season. Both promotion spots went to the Regionalliga West with Rot-Weiß Essen and Fortuna Köln promoted.
The 1972–73 season saw two new clubs in the league, VfB Oldenburg and SV Meppen, both promoted from the Amateurliga, while no club had been relegated from the Bundesliga to the league.
The 1972–73 season saw two new clubs in the league, BFC Preussen and Rot-Weiß Neukölln, both promoted from the Amateurliga Berlin, while no club had been relegated from the Bundesliga to the league. The league played a home-and-away round, after which it was split into a championship and relegation round. Former Bundesliga club Tasmania 1900 Berlin became insolvent at the end of the 1972–73 season and folded.
The 1972–73 season saw four new clubs in the league, 1. FC Mülheim and Sportfreunde Siegen, both promoted from the Verbandsliga, while Arminia Bielefeld, as part of the Bundesliga scandal, and Borussia Dortmund had been relegated from the Bundesliga to the league. Eintracht Gelsenkirchen merged at the end of the 1972–73 season with STV Horst-Emscher to form Eintracht Gelsenkirchen-Horst.
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