| Primera División 2020/2021 Apertura - Appearances as Referee |  |
 |
 |
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| 23/08/2020 | Municipal Grecia | - | Municipal Pérez Zeledón | 3:1 | 5 | - | - |
| 09/09/2020 | Sporting FC | - | CS Cartaginés | 2:3 | 5 | - | - |
| 26/09/2020 | Guadalupe | - | Municipal Pérez Zeledón | 4:1 | 3 | - | - |
| Primera División 2020/2021 Apertura - Appearances as Referee | |
|
|
||||
| 23/08/2020 | Municipal Grecia | - | Municipal Pérez Zeledón | 3:1 | 5 | - | - |
| 09/09/2020 | Sporting FC | - | CS Cartaginés | 2:3 | 5 | - | - |
| 26/09/2020 | Guadalupe | - | Municipal Pérez Zeledón | 4:1 | 3 | - | - |
| Complete name: | William Mattus Vega |
| Born: | 17/04/1964 |
| Place of birth: |
Costa Rica |
| Nationality: |
Costa Rica |
| Height: | 169 cm |
| Weight: | 75 kg |