| Copa Libertadores 1989 - Appearances as Referee |  |
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 |
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| 19/02/1989 | Universitario de Deportes | - | Boca Juniors | 1:0 | - | - | - |
| 02/03/1989 | Deportivo Quito | - | Millonarios | 0:0 | - | - | - |
| Copa Libertadores 1989 - Appearances as Referee | |
|
|
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| 19/02/1989 | Universitario de Deportes | - | Boca Juniors | 1:0 | - | - | - |
| 02/03/1989 | Deportivo Quito | - | Millonarios | 0:0 | - | - | - |
| Complete name: | Gastón Edmundo Castro Makuc |
| Born: | 23/08/1948 |
| Place of birth: |
Chile |
| Nationality: |
Chile |