| 1. Round | 01/11/2023 | Atlético de Lugones | - | Rayo Vallecano | 0:6 | ||||
| 2. Round | 06/12/2023 | Yeclano Deportivo | - | Rayo Vallecano | 0:2 |  |
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| 3. Round | 06/01/2024 | SD Huesca | - | Rayo Vallecano | 0:2 aet | ||||
| Round of 16 | 17/01/2024 | Girona FC | - | Rayo Vallecano | 3:1 |
| 1. Round | 01/11/2023 | Atlético de Lugones | - | Rayo Vallecano | 0:6 | ||||
| 2. Round | 06/12/2023 | Yeclano Deportivo | - | Rayo Vallecano | 0:2 | |
|||
| 3. Round | 06/01/2024 | SD Huesca | - | Rayo Vallecano | 0:2 aet | ||||
| Round of 16 | 17/01/2024 | Girona FC | - | Rayo Vallecano | 3:1 |
| Martín Pascual Castillo | |
| Born: | 04.08.1999 |
| Place of birth: |
Madrid, 
Spain |
| Nationality: |
Spain
|
| Height: | 190 cm |
| Weight: | 78 kg |
| Position(s): | Centre Back |
| Foot: | right |