| Oberliga Niedersachsen 2019/2020 - Appearances as Referee |  |
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| 01/09/2019 | SC Spelle-Venhaus | - | Eintracht Northeim | 5:0 | 4 | - | - |
| 01/12/2019 | FT Braunschweig | - | TuS Bersenbrück | 1:1 | 3 | - | - |
| Oberliga Niedersachsen 2019/2020 - Appearances as Referee | |
|
|
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| 01/09/2019 | SC Spelle-Venhaus | - | Eintracht Northeim | 5:0 | 4 | - | - |
| 01/12/2019 | FT Braunschweig | - | TuS Bersenbrück | 1:1 | 3 | - | - |
| Complete name: | Mario Birnstiel |
| Born: | 13/01/1986 |
| Place of birth: |
Germany |
| Residence: | Hannover |
| Nationality: |
Germany |
| Profession: | Polizist |
| Club: | TuSpo Petershütte |
| Height: | 186 cm |