Head to Head
| Spain Primera Division RFEF Group 2 | 2022/10/22 17:00 | Real Unión v Real Sociedad B | W | 0-1 |
| Europe Friendlies | 2022/08/06 09:30 | Real Unión v Real Sociedad B | L | 2-1 |
| Spain Segunda B Group 2 | 2021/02/20 17:30 | Real Unión v Real Sociedad B | L | 3-1 |
| Spain Segunda B Group 2 | 2020/11/22 11:00 | Real Sociedad B v Real Unión | L | 0-1 |
| Spain Segunda B Group 2 | 2019/12/15 16:00 | Real Unión v Real Sociedad B | D | 2-2 |
| Europe Friendlies | 2019/08/03 09:30 | Real Sociedad B v Real Unión | W | 1-0 |
| Spain Segunda B Group 2 | 2019/02/24 17:00 | Real Sociedad B v Real Unión | W | 2-1 |
| Spain Segunda B Group 2 | 2018/10/07 15:00 | Real Unión v Real Sociedad B | L | 2-1 |
Home History
| Spain Primera Division RFEF Group 2 | 2023/02/04 18:00 | Real Murcia v Real Sociedad B | D | 1-1 |
| Spain Primera Division RFEF Group 2 | 2023/01/28 18:15 | Barcelona B v Real Sociedad B | D | 1-1 |
| Spain Primera Division RFEF Group 2 | 2023/01/22 11:00 | Real Sociedad B v CF Intercity | W | 2-1 |
| Spain Primera Division RFEF Group 2 | 2023/01/15 11:00 | Amorebieta v Real Sociedad B | W | 1-2 |
| Spain Primera Division RFEF Group 2 | 2023/01/08 11:00 | Real Sociedad B v SD Logrones | W | 3-0 |
| Spain Primera Division RFEF Group 2 | 2022/12/17 15:00 | CD Castellon v Real Sociedad B | D | 1-1 |
| Spain Primera Division RFEF Group 2 | 2022/12/10 16:00 | Real Sociedad B v La Nucia | L | 2-3 |
| Spain Primera Division RFEF Group 2 | 2022/12/06 18:00 | UD Logrones v Real Sociedad B | D | 1-1 |
Away History
| Spain Primera Division RFEF Group 2 | 2023/02/04 16:00 | Real Unión v CF Intercity | D | 2-2 |
| Spain Primera Division RFEF Group 2 | 2023/01/29 17:00 | Amorebieta v Real Unión | L | 2-1 |
| Spain Primera Division RFEF Group 2 | 2023/01/21 18:00 | Real Unión v Eldense | L | 0-1 |
| Spain Primera Division RFEF Group 2 | 2023/01/15 15:00 | Athletic Bilbao B v Real Unión | W | 0-1 |
| Spain Primera Division RFEF Group 2 | 2023/01/08 15:00 | Real Unión v CD Castellon | D | 1-1 |
| Spain Copa del Rey | 2022/12/20 20:00 | Real Unión v Mallorca | L | 0-1 |
| Spain Primera Division RFEF Group 2 | 2022/12/17 18:00 | Barcelona B v Real Unión | L | 2-1 |
| Spain Primera Division RFEF Group 2 | 2022/12/11 16:00 | Real Unión v Osasuna B | W | 1-0 |