| World Cup 1950 Brazil - Appearances as Assistant | ||||
| 28/06/1950 | Yugoslavia | - | Mexico | 4:1 |
| 02/07/1950 | Chile | - | USA | 5:2 |
| World Cup 1950 Brazil - Appearances as Assistant | ||||
| 28/06/1950 | Yugoslavia | - | Mexico | 4:1 |
| 02/07/1950 | Chile | - | USA | 5:2 |
| Complete name: | Mario Rúben Heyen |
| Born: | |
| Place of birth: |
Paraguay |
| Nationality: |
Paraguay |