| Copa Libertadores 1998 - Appearances as Referee |  |
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 |
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| 05/03/1998 | Bolívar | - | Peñarol | 1:0 | - | - | - |
| 16/03/1998 | Deportivo Guadalajara | - | Vasco da Gama - RJ | 1:0 | 7 | 1 | 1 |
| 12/05/1998 | Bolívar | - | Barcelona | 1:1 | 6 | - | 1 |
| Copa Libertadores 1998 - Appearances as Referee | |
|
|
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| 05/03/1998 | Bolívar | - | Peñarol | 1:0 | - | - | - |
| 16/03/1998 | Deportivo Guadalajara | - | Vasco da Gama - RJ | 1:0 | 7 | 1 | 1 |
| 12/05/1998 | Bolívar | - | Barcelona | 1:1 | 6 | - | 1 |
| Complete name: | Robert Gustavo Troxler Ayala |
| Born: | |
| Place of birth: |
Paraguay |
| Nationality: |
Paraguay |