| Super League 1989/1990 Abstieg Gruppe A - Appearances as Referee |  |
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| 04/03/1990 | FC Schaffhausen | - | FC Zürich | 2:2 | 3 | - | - |
| 11/04/1990 | Yverdon Sport FC | - | FC Basel | 1:1 | 1 | - | - |
| 19/05/1990 | AC Bellinzona | - | FC Zürich | 0:0 | 2 | - | - |
| Super League 1989/1990 Abstieg Gruppe A - Appearances as Referee | |
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| 04/03/1990 | FC Schaffhausen | - | FC Zürich | 2:2 | 3 | - | - |
| 11/04/1990 | Yverdon Sport FC | - | FC Basel | 1:1 | 1 | - | - |
| 19/05/1990 | AC Bellinzona | - | FC Zürich | 0:0 | 2 | - | - |
| Complete name: | Karl Strässle |
| Born: | 28/07/1949 |
| Place of birth: |
Switzerland |
| Nationality: |
Switzerland |