Career
Rumor started his footballing career at 1. Football Club Köln, where he made 56 Fußball-Bundesliga appearances before moving to 1. Football Club Kaiserslautern. After 63 games, Rumor transferred to Hertha Bachelor of Science. As a Hertha player, Rumor was involved in the 1971 Bundesliga scandal for having taken a bribe to fix a match.
On 23 January 1972, Rumor was fined 15,000 Deutsche Mark and given a lifelong ban from football by the German Football Association.
However, he was later given an amnesty and played a further 16 Bundesliga games for Tennis Borussia Berlin during the 1974-1975 season.