Head to Head
| Europe Friendlies | 2023/08/16 17:00 | Real Sociedad B v Real Unión | L | 2-1 |
| Spain Primera Division RFEF Group 2 | 2023/02/11 18:00 | Real Sociedad B v Real Unión | L | 2-0 |
| Spain Primera Division RFEF Group 2 | 2022/10/22 17:00 | Real Unión v Real Sociedad B | L | 0-1 |
| Europe Friendlies | 2022/08/06 09:30 | Real Unión v Real Sociedad B | W | 2-1 |
| Spain Segunda B Group 2 | 2021/02/20 17:30 | Real Unión v Real Sociedad B | W | 3-1 |
| Spain Segunda B Group 2 | 2020/11/22 11:00 | Real Sociedad B v Real Unión | W | 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 | L | 1-0 |
Home History
| Spain Primera Division RFEF Group 1 | 2023/11/11 16:00 | UE Cornella v Real Unión | L | 3-1 |
| Spain Primera Division RFEF Group 1 | 2023/11/05 15:00 | Real Unión v Deportivo La Coruna | W | 3-0 |
| Spain Primera Division RFEF Group 1 | 2023/10/29 11:00 | Lugo v Real Unión | L | 2-0 |
| Spain Primera Division RFEF Group 1 | 2023/10/22 14:00 | Real Unión v Ponferradina | D | 1-1 |
| Spain Primera Division RFEF Group 1 | 2023/10/14 15:00 | Celta Fortuna v Real Unión | L | 3-0 |
| Spain Primera Division RFEF Group 1 | 2023/10/08 10:00 | Real Unión v SD Tarazona | W | 1-0 |
| Spain Primera Division RFEF Group 1 | 2023/10/01 16:00 | Unionistas de Salamanca CF v Real Unión | L | 1-0 |
| Spain Copa Federacion | 2023/09/27 18:00 | Marino de Luanco v Real Unión | L | 2-1 |
Away History
| Spain Primera Division RFEF Group 1 | 2023/11/11 17:00 | Real Sociedad B v CD Arenteiro | D | 2-2 |
| Spain Primera Division RFEF Group 1 | 2023/11/05 16:00 | Sabadell v Real Sociedad B | W | 1-2 |
| Spain Primera Division RFEF Group 1 | 2023/10/29 19:00 | Real Sociedad B v Rayo Majadahonda | W | 2-0 |
| Spain Primera Division RFEF Group 1 | 2023/10/22 15:00 | Gimnastic v Real Sociedad B | D | 2-2 |
| Spain Primera Division RFEF Group 1 | 2023/10/15 18:00 | Real Sociedad B v Cultural Leonesa | D | 0-0 |
| Spain Primera Division RFEF Group 1 | 2023/10/08 18:00 | Real Sociedad B v Barcelona B | W | 1-0 |
| Spain Primera Division RFEF Group 1 | 2023/10/01 10:00 | UE Cornella v Real Sociedad B | W | 0-1 |
| Spain Primera Division RFEF Group 1 | 2023/09/23 16:00 | Real Sociedad B v Lugo | D | 1-1 |