| DFB-Pokal 1977/1978 - Appearances as Referee |  |
 |
 |
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| 30/07/1977 | KSV Baunatal | - | Alemannia Aachen | 2:3 | - | - | - |
| 15/10/1977 | FC Schalke 04 | - | Eintracht Frankfurt | 1:0 | 4 | - | - |
| DFB-Pokal 1977/1978 - Appearances as Referee | |
|
|
||||
| 30/07/1977 | KSV Baunatal | - | Alemannia Aachen | 2:3 | - | - | - |
| 15/10/1977 | FC Schalke 04 | - | Eintracht Frankfurt | 1:0 | 4 | - | - |
| 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 |