| Youth B Bundesliga West 2012/2013 - Appearances as Referee |  |
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 |
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| 19/08/2012 | Bor. Mönchengladbach | - | Sportfreunde Siegen | 4:0 | 2 | - | - |
| 09/02/2013 | Bayer Leverkusen | - | Alemannia Aachen | 0:2 | 3 | - | - |
| Youth B Bundesliga West 2012/2013 - Appearances as Referee | |
|
|
||||
| 19/08/2012 | Bor. Mönchengladbach | - | Sportfreunde Siegen | 4:0 | 2 | - | - |
| 09/02/2013 | Bayer Leverkusen | - | Alemannia Aachen | 0:2 | 3 | - | - |
| Complete name: | Mario Heller |
| Born: | 24/03/1989 |
| Place of birth: |
Germany |
| Residence: | Köln |
| Nationality: |
Germany |
| Club: | SV Westhoven-Ensen 1931 |