| Oberliga Mittelrhein 2018/2019 - Appearances as Referee |  |
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 |
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| 30/09/2018 | FC Hennef 05 | - | SpVg Frechen 20 | 3:2 | 3 | - | - |
| 07/10/2018 | Siegburger SV 04 | - | VfL Alfter | 3:2 | - | 1 | - |
| Oberliga Mittelrhein 2018/2019 - Appearances as Referee | |
|
|
||||
| 30/09/2018 | FC Hennef 05 | - | SpVg Frechen 20 | 3:2 | 3 | - | - |
| 07/10/2018 | Siegburger SV 04 | - | VfL Alfter | 3:2 | - | 1 | - |
| Complete name: | Mario Heller |
| Born: | 24/03/1989 |
| Place of birth: |
Germany |
| Residence: | Köln |
| Nationality: |
Germany |
| Club: | SV Westhoven-Ensen 1931 |