| Europa League 1989/1990 - Appearances as Referee |  |
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 |
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| 11/09/1989 | Valencia CF | - | Victoria Bucuresti | 3:1 | - | - | - |
| 26/09/1989 | Juventus | - | Górnik Zabrze | 4:2 | - | - | - |
| 21/11/1989 | ACF Fiorentina | - | Dinamo Kiev | 1:0 | - | - | 1 |
| Europa League 1989/1990 - Appearances as Referee | |
|
|
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| 11/09/1989 | Valencia CF | - | Victoria Bucuresti | 3:1 | - | - | - |
| 26/09/1989 | Juventus | - | Górnik Zabrze | 4:2 | - | - | - |
| 21/11/1989 | ACF Fiorentina | - | Dinamo Kiev | 1:0 | - | - | 1 |
| Complete name: | Karl-Heinz Tritschler |
| Born: | 16/09/1949 |
| Place of birth: |
Germany |
| Residence: | Freiburg |
| Nationality: |
Germany |
| Bundesliga (GER) appearances: | 98 |