| DFB-Pokal 1970/1971 - Appearances as Referee |  |
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| 12/12/1970 | SG Wattenscheid 09 | - | Hertha BSC | 1:2 | - | - | - |
| DFB-Pokal 1970/1971 - Appearances as Referee | |
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| 12/12/1970 | SG Wattenscheid 09 | - | Hertha BSC | 1:2 | - | - | - |
| Complete name: | Walter Horstmann |
| Born: | 28/08/1935 † 21/08/2015 |
| Place of birth: |
Hildesheim, 
Germany |
| Residence: | Groß Escherde |
| Nationality: |
Germany |
| Bundesliga (GER) appearances: | 144 |