| League Cup 1972/1973 - Appearances as Referee |  |
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| 02/08/1972 | MSV Duisburg | - | Schwarz-Weiß Essen | 3:1 | - | - | - |
| 18/08/1972 | MSV Duisburg | - | Bor. Mönchengladbach | 0:0 | - | - | - |
| League Cup 1972/1973 - Appearances as Referee | |
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| 02/08/1972 | MSV Duisburg | - | Schwarz-Weiß Essen | 3:1 | - | - | - |
| 18/08/1972 | MSV Duisburg | - | Bor. Mönchengladbach | 0:0 | - | - | - |
| Complete name: | Horst Bonacker |
| Born: | 18/05/1937 |
| Place of birth: |
Germany |
| Residence: | Quadrath-Ichendorf |
| Nationality: |
Germany |
| Bundesliga (GER) appearances: | 30 |