| U20 World Cup 1999 Nigeria - Appearances as Referee |  |
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| 04/04/1999 | Australia | - | Saudi Arabia | 3:1 | 3 | - | - |
| 07/04/1999 | Saudi Arabia | - | Ireland | 0:2 | 2 | - | - |
| 10/04/1999 | Australia | - | Ireland | 0:4 | 3 | - | - |
| U20 World Cup 1999 Nigeria - Appearances as Referee | |
|
|
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| 04/04/1999 | Australia | - | Saudi Arabia | 3:1 | 3 | - | - |
| 07/04/1999 | Saudi Arabia | - | Ireland | 0:2 | 2 | - | - |
| 10/04/1999 | Australia | - | Ireland | 0:4 | 3 | - | - |
| Complete name: | Gustavo Méndez |
| Born: | 24/11/1967 |
| Place of birth: |
Uruguay |
| Nationality: |
Uruguay |