The league was established in 1974 to reduce the number of second divisions in Germany from five to two and thereby allow direct promotion to the league winners. Along with the foundation of the 2. Bundesliga Süd, formed from clubs of the two former Regionalligas of Süd and Südwest, went the foundation of the 2. Bundesliga Nord, which was created from clubs of the other three Regionalligas, Nord, Berlin and West. The league was created from thirteen southern and seven southwestern clubs, reflecting the difference in size of the two regions, south being much the larger. The winner of the 2. Bundesliga Süd was directly promoted to the Bundesliga, the runners-up played a home-and-away series versus the northern runners-up for the third promotion spot. The league operated with 20 teams in six seasons of its existence, only in 1980 was there 21 teams in the league. The bottom three, some years four teams were relegated to the Amateurligas, after 1978 to the new Oberligas. Until 1978, below the 2. Bundesliga Süd ranked the following Amateurligas:
The winners of the larger leagues of Bayern and Hessen were directly promoted while the other seven leagues had to play-off for two more promotion spots. After 1978, these seven leagues merged down to two new leagues and the champions of those four remaining leagues, now called Oberligas, were all directly promoted to the 2. Bundesliga Süd.
From the Regionalliga Südwest, seven clubs qualified for the new 2. Bundesliga Süd, from the Regionalliga Süd it was 13 clubs. The qualifying modus saw the last five seasons counted, whereby the last placed team in each season received one point, the second-last two points and so on. For a Bundesliga season within this five-year period, a club received 25 points, for an Amateurliga season none. For the seasons 1969–70 and 70–71, the received points counted single, for the 71–72 and 72–73 season double and for the 73–74 season three times. To be considered in the points table for the new league, a club had to play either in the Regionalliga in 1973–74 or to have been relegated from the Bundesliga to it for the next season, something which did not apply for the south as both teams relegated from the Bundesliga in 1974 went to the north. The bottom three clubs in each league, nominally the relegated teams in every other season, were barred from entry to the 2. Bundesliga, regardless of where they stood in the points ranking.
Regionalliga Südwest points table
Bold teams are promoted to the 2. Bundesliga.
1SV Alsenborn was denied the 2. Bundesliga licence.
Regionalliga Süd points table
Bold teams are promoted to the 2. Bundesliga.
1 Barred from gaining access to the 2. Bundesliga due to having finished on a relegation spot.
Disbanding of the 2. Bundesliga Süd
The league was dissolved in 1981. According to their performance of the last couple of seasons, nine clubs of the league went to the new 2. Bundesliga while the champion was promoted to Bundesliga. The ten remaining clubs were relegated to the Amateurligas. The teams admitted to the 2. Bundesliga were:
The reduction in numbers of second division teams hit especially the Saarland hard, having their three most well known clubs, all members of the Bundesliga at some stage, relegated. While the FC Homburg and the 1. FC Saarbrücken soon bounced back, Borussia Neunkirchen never returned to second division football but did remain a force in the Oberliga Südwest.
The third promotion spot to the Bundesliga was decided through a play-off round of the runners-up of the two 2. Bundesligas. Here are the results of this round:
