| Europa League Qual. 2019/2020 - Appearances as Referee |  |
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| 18/07/2019 | Ballymena United | - | Malmö FF | 0:4 | 4 | - | - |
| Europa League Qual. 2019/2020 - Appearances as Referee | |
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| 18/07/2019 | Ballymena United | - | Malmö FF | 0:4 | 4 | - | - |
| Complete name: | Kaarlo Oskari Hämäläinen |
| Born: | 02/04/1993 |
| Place of birth: |
Finland |
| Nationality: |
Finland |