| U21 EURO Qualifiers 2019/2020 - Appearances as Referee |  |
 |
 |
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| 14/10/2019 | San Marino | - | Croatia | 0:7 | - | - | - |
| 04/09/2020 | Norway | - | Gibraltar | 6:0 | 6 | - | - |
| 18/11/2020 | Luxembourg | - | Ireland | 1:2 | 2 | 1 | - |
| U21 EURO Qualifiers 2019/2020 - Appearances as Referee | |
|
|
||||
| 14/10/2019 | San Marino | - | Croatia | 0:7 | - | - | - |
| 04/09/2020 | Norway | - | Gibraltar | 6:0 | 6 | - | - |
| 18/11/2020 | Luxembourg | - | Ireland | 1:2 | 2 | 1 | - |
| Complete name: | Kaarlo Oskari Hämäläinen |
| Born: | 02/04/1993 |
| Place of birth: |
Finland |
| Nationality: |
Finland |