Union Berlin finishes Berlin vice-champion in 1950 and progresses to the nationwide German championship finals. However, the Berlin club was stopped in their tracks by a powerful Hamburg, who won 7-0 in the early rounds.
There was an added twist to that defeat to HSV: the match took place in Kiel due to ongoing disputes around the football structure in Berlin. The Geman Democratic Republic had existed in the Soviet-occupied zone of the capital since October 7, 1949. In the Federal Republic of Germany, terrorities had been administered by Americans, British and French authorities since May 24, 1949.
In the GDR territory, the Oberliga was founded on October 1 1948, as the highest league in the pyramid. But with East Berlin not officially part of GDR politically, clubs in this area were able to continue competing for the Berlin championship. The GDR refused to give permission for Union Oberschöneweide to travel to Kiel for the match in 1950.
Before the start of the 1951/52 season, the SG Union Oberschöneweide is joined by the operating association Motor Oberschöneweide. Only a part of the club decided to compete at the Oberliga level, while the others competed at lower levels.
At the end of the 1952/53 season, the BSG Motor Oberschöneweide was relegated from the Oberliga to the first division. On February 1, 1955, the club was renamed SC Motor Berlin.
After reaching 7th place in the standings, Motor Berlin entered the second division, the third tier, in 1955 as a result of a restructuring of its first-team football operations.
After its foundation on 28 April 1957, the German Gymnastics and Sports Federation took over the tasks held by the German Sports Committee. The German Football Association of the GDR, which emerged from its football section on 18 May 1958, is the corresponding professional organisation on the other side.
On June 6, 1957, representatives of four BSG clubs and SC Motor Berlin founded the Oberschöneweide Gymnastics and Sports Club in the clubhouse of the Oberschöneweide transformer plant. In the 1961/62 season the TSC Oberschöneweide rises to the second highest division. On 18 February 1963, the sports clubs TSC Oberschöneweide, SC Einheit Berlin and SC Rotation Berlin merged to form the Gymnastics and Sports Club Berlin in the building of the Central Council of the youth organisation Freie Deutsche Jugend.