Head to Head
| Spain Primera Division RFEF Group 1 | 2024/03/17 15:00 | Real Unión v Real Sociedad B | W | 1-3 |
| Spain Primera Division RFEF Group 1 | 2023/12/17 11:00 | Real Sociedad B v Real Unión | D | 2-2 |
| Europe Friendlies | 2023/08/16 17:00 | Real Sociedad B v Real Unión | W | 2-1 |
| Spain Primera Division RFEF Group 2 | 2023/02/11 18:00 | Real Sociedad B v Real Unión | W | 2-0 |
| 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 |
Home History
| Spain Primera Division RFEF Group 1 | 2024/11/10 16:30 | Zamora CF v Real Sociedad B | L | 1-0 |
| Spain Primera Division RFEF Group 1 | 2024/11/06 17:00 | Barcelona B v Real Sociedad B | D | 1-1 |
| Spain Primera Division RFEF Group 1 | 2024/11/02 16:30 | Real Sociedad B v CD Arenteiro | L | 0-1 |
| Spain Primera Division RFEF Group 1 | 2024/10/27 11:00 | FC Andorra v Real Sociedad B | D | 1-1 |
| Spain Primera Division RFEF Group 1 | 2024/10/19 19:30 | Real Sociedad B v SD Tarazona | W | 3-2 |
| Spain Primera Division RFEF Group 1 | 2024/10/06 10:00 | Real Sociedad B v Osasuna B | W | 3-1 |
| Spain Primera Division RFEF Group 1 | 2024/09/29 15:00 | Gimnastic v Real Sociedad B | L | 2-1 |
| Spain Primera Division RFEF Group 1 | 2024/09/22 15:30 | Real Sociedad B v Lugo | W | 1-0 |
Away History
| Spain Primera Division RFEF Group 1 | 2024/11/09 16:30 | Real Unión v Ponferradina | D | 2-2 |
| Spain Primera Division RFEF Group 1 | 2024/11/03 11:00 | Unionistas de Salamanca CF v Real Unión | L | 4-1 |
| Spain Primera Division RFEF Group 1 | 2024/10/26 13:30 | Real Unión v Gimnastic | W | 1-0 |
| Spain Primera Division RFEF Group 1 | 2024/10/20 10:00 | Gimnastica Segoviana v Real Unión | L | 3-0 |
| Spain Primera Division RFEF Group 1 | 2024/10/13 13:30 | Real Unión v Barakaldo | D | 1-1 |
| Spain Primera Division RFEF Group 1 | 2024/10/06 10:00 | FC Andorra v Real Unión | L | 2-0 |
| Spain Primera Division RFEF Group 1 | 2024/10/02 17:30 | SD Tarazona v Real Unión | D | 0-0 |
| Spain Primera Division RFEF Group 1 | 2024/09/28 13:30 | Real Unión v Sestao River | W | 2-1 |