| Copa del Rey 2017/2018 - Appearances as Referee |  |
 |
 |
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| 25/10/2017 | SD Eibar | - | RC Celta | 1:2 | 3 | - | - |
| 28/11/2017 | Levante UD | - | Girona FC | 1:1 | 5 | - | - |
| 03/01/2018 | UD Las Palmas | - | Valencia CF | 1:1 | 4 | - | - |
| 08/02/2018 | Valencia CF | - | FC Barcelona | 0:2 | 4 | - | - |
| Copa del Rey 2017/2018 - Appearances as Referee | |
|
|
||||
| 25/10/2017 | SD Eibar | - | RC Celta | 1:2 | 3 | - | - |
| 28/11/2017 | Levante UD | - | Girona FC | 1:1 | 5 | - | - |
| 03/01/2018 | UD Las Palmas | - | Valencia CF | 1:1 | 4 | - | - |
| 08/02/2018 | Valencia CF | - | FC Barcelona | 0:2 | 4 | - | - |
| Complete name: | Alberto Undiano Mallenco |
| Born: | 08/10/1973 |
| Place of birth: |
Pamplona, 
Spain |
| Residence: | Ansoain |
| Nationality: |
Spain |
| Height: | 181 cm |
| Weight: | 73 kg |