| U21 Friendlies 2011 - Appearances as Referee |  |
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| 29/03/2011 | Austria | - | Norway | 2:1 | - | - | - |
| U21 Friendlies 2011 - Appearances as Referee | |
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| 29/03/2011 | Austria | - | Norway | 2:1 | - | - | - |
| Complete name: | Mario Vlk |
| Born: | 21/09/1974 |
| Place of birth: |
Slovakia |
| Nationality: |
Slovakia |