| Youth B Bundesliga West 2013/2014 - Appearances as Referee |  |
 |
 |
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| 01/09/2013 | FC Schalke 04 | - | Borussia Dortmund | 0:2 | 2 | - | - |
| 01/06/2014 | MSV Duisburg | - | FC Schalke 04 | 1:4 | 2 | - | - |
| Youth B Bundesliga West 2013/2014 - Appearances as Referee | |
|
|
||||
| 01/09/2013 | FC Schalke 04 | - | Borussia Dortmund | 0:2 | 2 | - | - |
| 01/06/2014 | MSV Duisburg | - | FC Schalke 04 | 1:4 | 2 | - | - |
| Complete name: | Mario Heller |
| Born: | 24/03/1989 |
| Place of birth: |
Germany |
| Residence: | Köln |
| Nationality: |
Germany |
| Club: | SV Westhoven-Ensen 1931 |