| 3. Round | 21/01/2021 | UD Ibiza | - | Athletic Club | 1:2 |  |
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| Round of 16 | 28/01/2021 | CD Alcoyano | - | Athletic Club | 1:2 | ||||
| Semi-finals | 04/03/2021 | Levante UD | - | Athletic Club | 1:2 aet |  |
|||
| Final | 17/04/2021 | FC Barcelona | - | Athletic Club | 4:0 |
| 3. Round | 21/01/2021 | UD Ibiza | - | Athletic Club | 1:2 | |
|||
| Round of 16 | 28/01/2021 | CD Alcoyano | - | Athletic Club | 1:2 | ||||
| Semi-finals | 04/03/2021 | Levante UD | - | Athletic Club | 1:2 aet | |
|||
| Final | 17/04/2021 | FC Barcelona | - | Athletic Club | 4:0 |
| Unai Núñez Gestoso | |
| Born: | 30.01.1997 |
| Place of birth: |
Portugalete, 
Spain |
| Nationality: |
Spain
|
| Height: | 186 cm |
| Weight: | 80 kg |
| Position(s): | Centre Back |
| Foot: | right |