Head to Head
| Spain Segunda B Group 2 | 2017/03/26 15:00 | Real Unión v Zamudio | L | 2-1 |
| Spain Segunda B Group 1 | 2016/11/01 16:00 | Zamudio v Real Unión | D | 1-1 |
Home History
| Spain Tercera Group 4 | 2018/10/20 15:00 | Zamudio v Portugalete | L | 0-4 |
| Spain Tercera Group 4 | 2018/10/11 18:00 | Sestao River v Zamudio | D | 0-0 |
| Spain Tercera Group 4 | 2018/10/06 15:30 | Zamudio v JD Somorrostro | L | 1-2 |
| Spain Copa Federacion | 2018/10/03 18:00 | Zamudio v Real Sociedad C | L | 0-2 |
| Spain Tercera Group 4 | 2018/09/30 16:30 | SD Deusto v Zamudio | W | 0-1 |
| Spain Tercera Group 4 | 2018/09/22 15:30 | Zamudio v Lagun Onak | W | 4-2 |
| Spain Tercera Group 4 | 2018/09/15 16:30 | SD Beasain v Zamudio | L | 3-1 |
| Spain Tercera Group 4 | 2018/09/08 16:00 | Zamudio v Alaves B | L | 1-3 |
Away History
| Spain Segunda B Group 2 | 2018/10/21 15:00 | Real Unión v Arenas Club de Getxo | D | 1-1 |
| Spain Segunda B Group 2 | 2018/10/14 15:15 | Mirandes v Real Unión | D | 2-2 |
| Spain Segunda B Group 2 | 2018/10/07 15:00 | Real Unión v Real Sociedad B | W | 2-1 |
| Spain Segunda B Group 2 | 2018/09/30 16:00 | UD Logrones v Real Unión | L | 2-0 |
| Spain Segunda B Group 2 | 2018/09/22 14:00 | Real Unión v Real Oviedo B | D | 2-2 |
| Spain Segunda B Group 2 | 2018/09/16 16:00 | Gernika v Real Unión | D | 1-1 |
| Spain Segunda B Group 2 | 2018/09/09 16:00 | Real Unión v Leioa | L | 1-2 |
| Spain Segunda B Group 2 | 2018/09/02 16:00 | Amorebieta v Real Unión | W | 0-3 |