Head to Head
| Spain Segunda B Group 2 | 2019/12/08 16:00 | Barakaldo v Real Unión | L | 2-1 |
| Spain Segunda B Group 2 | 2019/04/07 15:00 | Barakaldo v Real Unión | L | 3-1 |
| Spain Segunda B Group 2 | 2018/11/17 15:00 | Real Unión v Barakaldo | L | 1-2 |
| Spain Segunda B Group 2 | 2018/02/04 16:00 | Real Unión v Barakaldo | D | 1-1 |
| Spain Segunda B Group 2 | 2017/09/17 16:00 | Barakaldo v Real Unión | L | 2-0 |
| Spain Segunda B Group 2 | 2017/04/09 15:00 | Real Unión v Barakaldo | D | 2-2 |
| Spain Segunda B Group 2 | 2016/11/13 17:00 | Barakaldo v Real Unión | W | 0-1 |
| Spain Segunda B Group 2 | 2016/04/23 14:00 | Barakaldo v Real Unión | L | 3-2 |
Home History
| Spain Segunda B Group 2 | 2020/11/08 17:00 | Laredo v Real Unión | L | 1-0 |
| Spain Segunda B Group 2 | 2020/10/25 16:00 | Leioa v Real Unión | W | 0-1 |
| Spain Segunda B Group 2 | 2020/03/07 15:00 | Athletic Bilbao B v Real Unión | D | 3-3 |
| Spain Segunda B Group 2 | 2020/02/29 15:15 | Valladolid Promesas v Real Unión | L | 1-0 |
| Spain Segunda B Group 2 | 2020/02/23 16:00 | Real Unión v Amorebieta | L | 0-1 |
| Spain Segunda B Group 2 | 2020/02/15 15:00 | Arenas Club de Getxo v Real Unión | D | 0-0 |
| Spain Segunda B Group 2 | 2020/02/09 16:00 | Real Unión v Osasuna B | D | 1-1 |
| Spain Segunda B Group 2 | 2020/02/02 11:00 | Tudelano v Real Unión | D | 2-2 |
Away History
| Spain Segunda B Group 2 | 2020/11/08 16:00 | Barakaldo v Real Sociedad B | L | 1-4 |
| Spain Segunda B Group 2 | 2020/10/31 14:45 | Amorebieta v Barakaldo | L | 2-0 |
| Spain Segunda B Group 2 | 2020/10/24 16:30 | Laredo v Barakaldo | L | 2-0 |
| Spain Copa Federacion | 2020/10/10 16:00 | Balmaseda FC v Barakaldo | L | 1-0 |
| Europe Friendlies | 2020/09/30 17:00 | JD Somorrostro v Barakaldo | L | 3-0 |
| Spain Segunda B Group 2 | 2020/03/08 16:00 | Barakaldo v CD Calahorra | D | 1-1 |
| Spain Segunda B Group 2 | 2020/03/01 16:00 | Haro Deportivo v Barakaldo | D | 0-0 |
| Spain Segunda B Group 2 | 2020/02/23 16:00 | Barakaldo v Alaves B | D | 1-1 |