| 1. Round | 07/04/2021 | Real Sociedad B | - | SD Logroñés | 3:0 |  |
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| 2. Round | 11/04/2021 | CD Calahorra | - | Real Sociedad B | 1:2 |  |
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| 5. Round | 02/05/2021 | Real Sociedad B | - | CD Calahorra | 0:1 |
| 1. Round | 07/04/2021 | Real Sociedad B | - | SD Logroñés | 3:0 | |
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| 2. Round | 11/04/2021 | CD Calahorra | - | Real Sociedad B | 1:2 | |
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| 5. Round | 02/05/2021 | Real Sociedad B | - | CD Calahorra | 0:1 |
| Alexander Petxarroman Eizagirre | |
| Born: | 06.02.1997 |
| Place of birth: |
San Sebastián, 
Spain |
| Nationality: |
Spain
|
| Height: | 180 cm |
| Weight: | 67 kg |
| Position(s): | Right Back Centre Back |
| Foot: | right |