| Youth B Bundesliga West 2016/2017 - Appearances as Referee |  |
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| 20/08/2016 | Rot-Weiss Essen | - | 1. FC Köln | 1:0 | - | - | - |
| 29/10/2016 | FC Hennef 05 | - | Bayer Leverkusen | 0:5 | - | - | - |
| 18/02/2017 | 1. FC Köln | - | Bor. Mönchengladbach | 2:2 | 1 | - | - |
| Youth B Bundesliga West 2016/2017 - Appearances as Referee | |
|
|
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| 20/08/2016 | Rot-Weiss Essen | - | 1. FC Köln | 1:0 | - | - | - |
| 29/10/2016 | FC Hennef 05 | - | Bayer Leverkusen | 0:5 | - | - | - |
| 18/02/2017 | 1. FC Köln | - | Bor. Mönchengladbach | 2:2 | 1 | - | - |
| Complete name: | Dominic Mainzer |
| Born: | 27/11/1992 |
| Place of birth: |
Germany |
| Nationality: |
Germany |
| Club: | SV Konz |