| WC Qualifiers Play-offs 2001 - Appearances as Referee |  |
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 |
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| 15/11/2001 | Iran | - | Ireland | 1:0 | 2 | - | - |
| WC Qualifiers Play-offs 2001 - Appearances as Referee | |
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| 15/11/2001 | Iran | - | Ireland | 1:0 | 2 | - | - |
| Complete name: | William Mattus Vega |
| Born: | 17/04/1964 |
| Place of birth: |
Costa Rica |
| Nationality: |
Costa Rica |
| Height: | 169 cm |
| Weight: | 75 kg |