by the DFL allowed all Bundesliga and 2. Bundesliga clubs to freely choose whether or not to operate an under-23 reserve team. Previous to that such teams had been compulsory. 2 SSV Ulm 1846 declared insolvent at the end of the 2013–14 season and was relegated. Key References Sources Deutschlands Fußball in Zahlen, An annual publication with tables and results from the Bundesliga to Verbandsliga/Landesliga. DSFS. Kicker Almanach, The yearbook on German football from Bundesliga to Oberliga, since 1937. Kicker Sports Magazine. External links Official DFB web site on Regionalliga football Football results and tables from Germany Das deutsche Fussball Archiv Historic German league tables Sud Sudwest Football competitions in Saarland Football competitions in Rhineland-Palatinate Football competitions in Baden-Württemberg Football competitions in Hesse 2012 establishments in Germany Sports leagues established in 2012