Fußballnationalmannschaft der DDR
Up to 1978, Riedel played in four international matches for East Germany national football team and was part of the team which won a gold medal at the 1976 Summer Olympics in Montreal. In 1983, as an assistant of Klaus Sammer, he took over Dynamo Dresden training. On 26 August 1995, after the arrest of Rolf Jürgen Otto, Riedel became president of the association. He remained in this office until 2 September 1997.