| Europa Conference League 2021/2022 - Appearances as Referee |  |
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| 04/11/2021 | Zorya Lugansk | - | CSKA Sofia | 2:0 | 3 | - | - |
| Europa Conference League 2021/2022 - Appearances as Referee | |
|
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| 04/11/2021 | Zorya Lugansk | - | CSKA Sofia | 2:0 | 3 | - | - |
| Complete name: | Petri Juhani Viljanen |
| Born: | 00/00/1987 |
| Place of birth: |
Finland |
| Nationality: |
Finland |