| Copa Libertadores 2018 - Appearances as Referee |  |
 |
 |
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| 15/03/2018 | Santos FC | - | Nacional | 3:1 | 8 | 1 | - |
| 05/04/2018 | Boca Juniors | - | Atlético Junior | 1:0 | 4 | - | - |
| 19/04/2018 | Racing Club | - | Vasco da Gama - RJ | 4:0 | 5 | - | - |
| Copa Libertadores 2018 - Appearances as Referee | |
|
|
||||
| 15/03/2018 | Santos FC | - | Nacional | 3:1 | 8 | 1 | - |
| 05/04/2018 | Boca Juniors | - | Atlético Junior | 1:0 | 4 | - | - |
| 19/04/2018 | Racing Club | - | Vasco da Gama - RJ | 4:0 | 5 | - | - |
| Complete name: | Ulises Luis Arnaldo Mereles Abraham |
| Born: | 04/02/1984 |
| Place of birth: |
Paraguay |
| Nationality: |
Paraguay |