| Veikkausliiga 2021 Abstieg - Appearances as Referee |  |
 |
 |
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| 31/10/2021 | AC Oulu | - | KTP | 2:1 | 5 | 1 | - |
| Veikkausliiga 2021 Abstieg - Appearances as Referee | |
|
|
||||
| 31/10/2021 | AC Oulu | - | KTP | 2:1 | 5 | 1 | - |
| Complete name: | Kaarlo Oskari Hämäläinen |
| Born: | 02/04/1993 |
| Place of birth: |
Finland |
| Nationality: |
Finland |