Head to Head
| Spain Primera Division RFEF Group 1 | 2021/10/23 15:00 | Athletic Bilbao B v Real Unión | D | 0-0 |
| Europe Friendlies | 2021/08/11 16:30 | Real Unión v Athletic Bilbao B | L | 0-2 |
| Spain Segunda B Group 2 | 2021/03/28 10:00 | Real Unión v Athletic Bilbao B | L | 0-1 |
| Spain Segunda B Group 2 | 2021/01/10 17:00 | Athletic Bilbao B v Real Unión | D | 0-0 |
| Spain Segunda B Group 2 | 2020/03/07 15:00 | Athletic Bilbao B v Real Unión | D | 3-3 |
| Spain Segunda B Group 2 | 2019/10/19 14:00 | Real Unión v Athletic Bilbao B | L | 0-1 |
| Spain Segunda B Group 2 | 2019/05/12 16:00 | Athletic Bilbao B v Real Unión | L | 2-0 |
| Spain Segunda B Group 2 | 2018/12/22 15:30 | Real Unión v Athletic Bilbao B | W | 1-0 |
Home History
| Spain Primera Division RFEF Group 1 | 2022/04/10 15:00 | Zamora CF v Real Unión | W | 0-1 |
| Spain Primera Division RFEF Group 1 | 2022/04/03 15:00 | Real Unión v Cultural Leonesa | D | 1-1 |
| Spain Primera Division RFEF Group 1 | 2022/03/25 20:00 | CD Badajoz v Real Unión | L | 2-1 |
| Spain Primera Division RFEF Group 1 | 2022/03/19 18:00 | Real Unión v UD San Sebastian Reyes | L | 0-1 |
| Spain Primera Division RFEF Group 1 | 2022/03/12 16:00 | Racing Ferrol v Real Unión | L | 2-1 |
| Spain Primera Division RFEF Group 1 | 2022/03/06 11:00 | Real Unión v CD Calahorra | L | 0-2 |
| Spain Primera Division RFEF Group 1 | 2022/03/02 18:00 | Real Unión v Valladolid Promesas | W | 2-1 |
| Spain Primera Division RFEF Group 1 | 2022/02/27 16:00 | Racing Santander v Real Unión | L | 4-1 |
Away History
| Spain Primera Division RFEF Group 1 | 2022/04/10 10:00 | Athletic Bilbao B v Deportivo La Coruna | D | 1-1 |
| Spain Primera Division RFEF Group 1 | 2022/03/27 10:00 | Athletic Bilbao B v Tudelano | W | 1-0 |
| Spain Primera Division RFEF Group 1 | 2022/03/20 16:00 | CF Talavera v Athletic Bilbao B | L | 4-0 |
| Spain Primera Division RFEF Group 1 | 2022/03/13 11:00 | Athletic Bilbao B v CF Internacional de Madrid | W | 1-0 |
| Spain Primera Division RFEF Group 1 | 2022/03/06 11:00 | Unionistas de Salamanca CF v Athletic Bilbao B | W | 0-1 |
| Spain Primera Division RFEF Group 1 | 2022/02/25 20:00 | Athletic Bilbao B v Valladolid Promesas | W | 3-0 |
| Spain Primera Division RFEF Group 1 | 2022/02/20 16:00 | Rayo Majadahonda v Athletic Bilbao B | D | 1-1 |
| Spain Primera Division RFEF Group 1 | 2022/02/12 18:00 | Athletic Bilbao B v Zamora CF | W | 1-0 |