| Spain Segunda Division RFEF Group 2 | 2021/09/05 16:30 | Sestao River v Laredo | W | 2-0 |
| Spain Tercera Group 4 | 2021/06/05 15:30 | Sestao River v Urduliz FT | W | 2-0 |
| Spain Tercera - Play-Offs | 2021/05/29 15:30 | Sestao River v CD Anaitasuna | W | 1-0 |
| Spain Tercera Group 4 | 2021/05/15 16:00 | Urduliz FT v Sestao River | W | 0-3 |
| Spain Tercera Group 4 | 2021/05/09 15:30 | Sestao River v Pasaia KE | W | 2-1 |
| Spain Tercera Group 4 | 2021/05/02 14:30 | CD Vitoria v Sestao River | W | 0-1 |
| Spain Tercera Group 4 | 2021/04/25 15:30 | Sestao River v Urduliz FT | D | 1-1 |
| Spain Tercera Group 4 | 2021/04/17 15:00 | Pasaia KE v Sestao River | W | 1-2 |
| Spain Segunda Division RFEF Group 2 | 2021/09/04 16:00 | UD Logrones B v Mutilvera | L | 2-3 |
| Spain Tercera - Play-Offs | 2021/05/30 16:00 | Alfaro v UD Logrones B | W | 1-2 |
| Spain Tercera - Play-Offs | 2021/05/23 15:00 | UD Logrones B v Anguiano | W | 1-0 |
| Spain Tercera Group 16 | 2021/05/09 15:00 | UD Logrones B v Varea | W | 3-0 |
| Spain Tercera Group 16 | 2021/05/02 15:00 | Alfaro v UD Logrones B | L | 1-0 |
| Spain Tercera Group 16 | 2021/04/24 17:00 | UD Logrones B v Anguiano | W | 3-1 |
| Spain Tercera Group 16 | 2021/04/18 10:00 | Varea v UD Logrones B | D | 2-2 |
| Spain Tercera Group 16 | 2021/04/11 10:00 | UD Logrones B v Alfaro | L | 0-1 |