| Copa Libertadores 1975 - Appearances as Referee |  |
 |
 |
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| 22/02/1975 | The Strongest | - | Jorge Wilstermann | 3:1 | - | - | - |
| 04/03/1975 | LDU Quito | - | Portuguesa FC | 1:1 | - | - | 1 |
| Copa Libertadores 1975 - Appearances as Referee | |
|
|
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| 22/02/1975 | The Strongest | - | Jorge Wilstermann | 3:1 | - | - | - |
| 04/03/1975 | LDU Quito | - | Portuguesa FC | 1:1 | - | - | 1 |
| Complete name: | Juan Oscar Ortubé Vargas |
| Born: | 24/05/1944 |
| Place of birth: |
Bolivia |
| Nationality: |
Bolivia |