| Europa League 1990/1991 - Appearances as Referee |  |
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 |
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| 17/09/1990 | Fenerbahçe | - | Vitória Guimarães | 3:0 | - | - | - |
| 24/10/1990 | FC Luzern | - | Admira/Wacker | 0:1 | - | - | - |
| Europa League 1990/1991 - Appearances as Referee | |
|
|
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| 17/09/1990 | Fenerbahçe | - | Vitória Guimarães | 3:0 | - | - | - |
| 24/10/1990 | FC Luzern | - | Admira/Wacker | 0:1 | - | - | - |
| Complete name: | Ivan Grégr |
| Born: | 21/05/1942 |
| Place of birth: |
Praha, 
CSSR |
| Residence: | Praha |
| Nationality: |
Czech Republic |
| Profession: | Mechaniker |
| Club: | Karriereende |