| Regionalliga Süd (1963-1974) 1964/1965 - Appearances as Referee |  |
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| 09/08/1964 | 1. FC Schweinfurt 05 | - | Waldhof Mannheim | 3:0 | - | - | - |
| 27/02/1965 | VfR Mannheim | - | Waldhof Mannheim | 1:1 | - | - | - |
| 02/05/1965 | 1. FC Schweinfurt 05 | - | VfR Mannheim | 2:0 | - | - | - |
| Regionalliga Süd (1963-1974) 1964/1965 - Appearances as Referee | |
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| 09/08/1964 | 1. FC Schweinfurt 05 | - | Waldhof Mannheim | 3:0 | - | - | - |
| 27/02/1965 | VfR Mannheim | - | Waldhof Mannheim | 1:1 | - | - | - |
| 02/05/1965 | 1. FC Schweinfurt 05 | - | VfR Mannheim | 2:0 | - | - | - |
| Complete name: | Horst Mathieu |
| Born: | 03/06/1936 † |
| Place of birth: |
Germany |
| Residence: | Saarbrücken |
| Nationality: |
Germany |
| Bundesliga (GER) appearances: | 20 |