Gameplan
| Date | Round | Match | Match | Res. | Attendance | |
|---|---|---|---|---|---|---|
| 09.01.2021 |  | Matchday 11 | Leioa - Barakaldo CF | - Bar | 2:2 | |
| 16.01.2021 | | Matchday 12 | Leioa - Real Sociedad B | - RSO | 1:1 | |
| 28.02.2021 | | Matchday 18 | Leioa - CD Alavés B | - ALA | 2:2 | |
| 03.03.2021 | | Matchday 14 | Leioa - Arenas de Getxo | - | 1:1 | |
| 10.03.2021 | | Matchday 16 | Leioa - Portugalete | - POR | 1:2 | |
| 21.03.2021 | | Matchday 21 | Leioa - CD Laredo | - CDL | 0:1 | |
| 07.04.2021 | | Matchday 1 | Leioa - UD Mutilvera | - MUT | 0:1 | |
| 17.04.2021 | | Matchday 3 | Leioa - CD Izarra | - IZA | 1:0 | |
| 08.05.2021 | | Matchday 6 | Leioa - Haro Deportivo | - HAR | 2:1 | |
| 22.05.2021 | | Matchday 8 | Leioa - SD Ejea | - EJE | 0:1 | |
| 02.12.2021 |  | 1. Round | Leioa - Elche CF | - ELC | 0:2 |