| 21. Ronde | 29.01.2023 | Athletic Club B | - | UD Logroñés | 3:0 | ||||
| 23. Ronde | 12.02.2023 | CF Intercity | - | Athletic Club B | 1:0 |  |
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| 24. Ronde | 18.02.2023 | Athletic Club B | - | FC Barcelona B | 1:1 | ||||
| 26. Ronde | 05.03.2023 | Athletic Club B | - | CD Calahorra | 2:3 | ||||
| 28. Ronde | 18.03.2023 | Athletic Club B | - | CE Sabadell | 2:2 | ||||
| 29. Ronde | 26.03.2023 | Atlético Baleares | - | Athletic Club B | 2:0 | ||||
| 31. Ronde | 09.04.2023 | CF La Nucía | - | Athletic Club B | 3:1 | |
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| 32. Ronde | 16.04.2023 | Athletic Club B | - | CD Numancia | 0:1 | ||||
| 33. Ronde | 22.04.2023 | Real Unión | - | Athletic Club B | 2:1 |  |
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| 34. Ronde | 30.04.2023 | Athletic Club B | - | CD Castellón | 0:2 | ||||
| 35. Ronde | 07.05.2023 | UE Cornellà | - | Athletic Club B | 1:0 | ||||
| 36. Ronde | 13.05.2023 | Athletic Club B | - | CD Alcoyano | 1:3 | ||||
| 37. Ronde | 20.05.2023 | CD Eldense | - | Athletic Club B | 1:0 | ||||
| 38. Ronde | 27.05.2023 | Athletic Club B | - | SD Amorebieta | 0:0 |
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