| Copa Libertadores 1981 - Appearances as Referee |  |
 |
 |
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| 21/04/1981 | Estudiantes de Mérida | - | Bella Vista | 1:4 | - | - | - |
| 30/07/1981 | Atlético Mineiro | - | Cerro Porteño | 2:2 | - | - | - |
| Copa Libertadores 1981 - Appearances as Referee | |
|
|
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| 21/04/1981 | Estudiantes de Mérida | - | Bella Vista | 1:4 | - | - | - |
| 30/07/1981 | Atlético Mineiro | - | Cerro Porteño | 2:2 | - | - | - |
| Complete name: | Gastón Edmundo Castro Makuc |
| Born: | 23/08/1948 |
| Place of birth: |
Chile |
| Nationality: |
Chile |