The Bundesliga scandal (der Bundesliga-Skandal) refers to the malicious, for-profit manipulation of games in the 1970–71 German football championship season.
The manipulation of games was revealed when the president of Kickers Offenbach, Horst-Gregorio Canellas, presented an audio-tape to DFB officials and a few journalists at his 50th birthday garden-party.
In that tape, several players, including German internationals Bernd Patzke and Manfred Manglitz, could be heard offering to let themselves be bribed to help Offenbach avoid relegation.
[1] The chief prosecutor of the DFB, Hans Kindermann, found out that, amongst others, the 17 April 1971 game between FC Schalke and Arminia Bielefeld that ended 0–1, had been "sold" (or thrown) by Schalke's players and the board of directors.
Offenbach had been relegated due to their sporting performance anyway, despite the manipulated games, but Bielefeld played in the next Bundesliga season.