| DFB-Pokal 1979/1980 - Appearances as Referee |  |
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 |
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| 29/09/1979 | DSC Wanne-Eickel | - | Kickers Offenbach | 3:5 | 4 | - | - |
| 14/02/1980 | FC Schalke 04 | - | VfL Osnabrück | 2:0 | 1 | - | - |
| DFB-Pokal 1979/1980 - Appearances as Referee | |
|
|
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| 29/09/1979 | DSC Wanne-Eickel | - | Kickers Offenbach | 3:5 | 4 | - | - |
| 14/02/1980 | FC Schalke 04 | - | VfL Osnabrück | 2:0 | 1 | - | - |
| Complete name: | Karl-Josef Assenmacher |
| Born: | 30/05/1947 |
| Place of birth: |
Germany |
| Residence: | Fischenich |
| Nationality: |
Germany |
| Bundesliga (GER) appearances: | 153 |