| 2. Bundesliga 1981/1982 - Appearances as Referee |  |
 |
 |
||||
| 04/08/1981 | Bayer 05 Uerdingen | - | Alemannia Aachen | 1:0 | 2 | - | - |
| 12/09/1981 | SG Union Solingen | - | Waldhof Mannheim | 1:1 | 2 | - | - |
| 2. Bundesliga 1981/1982 - Appearances as Referee | |
|
|
||||
| 04/08/1981 | Bayer 05 Uerdingen | - | Alemannia Aachen | 1:0 | 2 | - | - |
| 12/09/1981 | SG Union Solingen | - | Waldhof Mannheim | 1:1 | 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 |