| 2. Bundesliga 1980/1981 South - Appearances as Referee |  |
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| 13/02/1981 | SV Darmstadt 98 | - | Stuttgarter Kickers | 1:0 | 3 | - | - |
| 12/03/1981 | ESV Ingolstadt | - | Hessen Kassel | 0:2 | 7 | - | 1 |
| 03/04/1981 | Wormatia Worms | - | FC 08 Homburg | 0:0 | 5 | - | - |
| 2. Bundesliga 1980/1981 South - Appearances as Referee | |
|
|
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| 13/02/1981 | SV Darmstadt 98 | - | Stuttgarter Kickers | 1:0 | 3 | - | - |
| 12/03/1981 | ESV Ingolstadt | - | Hessen Kassel | 0:2 | 7 | - | 1 |
| 03/04/1981 | Wormatia Worms | - | FC 08 Homburg | 0:0 | 5 | - | - |
| Complete name: | Klaus Clajus |
| Born: | 03/07/1940 |
| Place of birth: |
Germany |
| Residence: | Karlsruhe |
| Nationality: |
Germany |
| Bundesliga (GER) appearances: | 23 |