[15] Athletic Bilbao B 0-0 Real Unión [10] 2021-10-23 15:00
Stadium: Instalaciones de Lezama Round: 9
Head to Head
| Europe Friendlies | 2021/08/11 16:30 | Real Unión v Athletic Bilbao B | W | 0-2 |
| Spain Segunda B Group 2 | 2021/03/28 10:00 | Real Unión v Athletic Bilbao B | W | 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 | W | 0-1 |
| Spain Segunda B Group 2 | 2019/05/12 16:00 | Athletic Bilbao B v Real Unión | W | 2-0 |
| Spain Segunda B Group 2 | 2018/12/22 15:30 | Real Unión v Athletic Bilbao B | L | 1-0 |
| Spain Segunda B Group 2 | 2018/01/20 15:00 | Real Unión v Athletic Bilbao B | L | 1-0 |
Home History
| Spain Primera Division RFEF Group 1 | 2021/10/17 10:00 | Valladolid Promesas v Athletic Bilbao B | L | 3-1 |
| Spain Primera Division RFEF Group 1 | 2021/10/08 17:00 | Athletic Bilbao B v Celta Fortuna | L | 0-1 |
| Spain Primera Division RFEF Group 1 | 2021/10/03 10:00 | Tudelano v Athletic Bilbao B | D | 2-2 |
| Spain Primera Division RFEF Group 1 | 2021/09/26 10:00 | Athletic Bilbao B v UD Logrones | W | 3-1 |
| Spain Primera Division RFEF Group 1 | 2021/09/17 17:00 | Athletic Bilbao B v Unionistas de Salamanca CF | L | 0-1 |
| Spain Primera Division RFEF Group 1 | 2021/09/12 15:00 | Cultural Leonesa v Athletic Bilbao B | L | 2-1 |
| Spain Primera Division RFEF Group 1 | 2021/09/05 16:45 | Athletic Bilbao B v Racing Ferrol | D | 2-2 |
| Spain Primera Division RFEF Group 1 | 2021/08/29 17:30 | Zamora CF v Athletic Bilbao B | W | 0-1 |
Away History
| Spain Primera Division RFEF Group 1 | 2021/10/15 17:00 | CD Calahorra v Real Unión | W | 2-4 |
| Spain Primera Division RFEF Group 1 | 2021/10/09 15:00 | Real Unión v Deportivo La Coruna | W | 2-1 |
| Spain Primera Division RFEF Group 1 | 2021/10/03 10:00 | Rayo Majadahonda v Real Unión | L | 1-0 |
| Spain Primera Division RFEF Group 1 | 2021/09/25 17:00 | Real Unión v CD Badajoz | L | 1-2 |
| Spain Primera Division RFEF Group 1 | 2021/09/19 15:00 | UD Logrones v Real Unión | L | 1-0 |
| Spain Primera Division RFEF Group 1 | 2021/09/10 17:00 | Real Unión v Celta Fortuna | L | 1-4 |
| Spain Primera Division RFEF Group 1 | 2021/09/05 10:00 | Valladolid Promesas v Real Unión | W | 0-2 |
| Spain Primera Division RFEF Group 1 | 2021/08/28 15:30 | Real Unión v CF Internacional de Madrid | W | 2-1 |