Face à face
| Segunda B, Relegation Group 2 | 2019/01/26 15:00 | Leioa v Real Unión | W | 0-1 |
| Segunda B, Relegation Group 2 | 2018/09/09 16:00 | Real Unión v Leioa | L | 1-2 |
| Segunda B, Relegation Group 2 | 2018/04/07 16:00 | Leioa v Real Unión | D | 0-0 |
| Segunda B, Relegation Group 2 | 2017/11/12 16:00 | Real Unión v Leioa | L | 1-3 |
| Segunda B, Relegation Group 2 | 2017/02/18 15:00 | Leioa v Real Unión | L | 2-0 |
| Segunda B, Relegation Group 2 | 2016/10/02 15:00 | Real Unión v Leioa | W | 2-1 |
| Segunda B, Relegation Group 2 | 2016/05/15 16:00 | Real Unión v Leioa | L | 0-1 |
| Segunda B, Relegation Group 2 | 2016/01/02 17:00 | Leioa v Real Unión | W | 0-2 |
Home History
| Segunda B, Relegation Group 2 | 2019/11/24 15:00 | Izarra v Real Unión | W | 0-1 |
| Segunda B, Relegation Group 2 | 2019/11/17 17:00 | Real Unión v Guijuelo | W | 2-1 |
| Segunda B, Relegation Group 2 | 2019/11/09 15:00 | Unionistas de Salamanca CF v Real Unión | W | 0-2 |
| Segunda B, Relegation Group 2 | 2019/11/03 16:00 | Real Unión v Burgos | L | 0-1 |
| Segunda B, Relegation Group 2 | 2019/10/26 17:00 | UD Logrones v Real Unión | L | 3-2 |
| Segunda B, Relegation Group 2 | 2019/10/19 14:00 | Real Unión v Athletic Bilbao B | L | 0-1 |
| Segunda B, Relegation Group 2 | 2019/10/12 15:00 | Real Unión v Valladolid B | W | 2-1 |
| Segunda B, Relegation Group 2 | 2019/10/05 14:30 | Amorebieta v Real Unión | W | 1-4 |
Away History
| Segunda B, Relegation Group 2 | 2019/11/23 16:30 | Leioa v Amorebieta | L | 0-1 |
| Segunda B, Relegation Group 2 | 2019/11/16 15:00 | Arenas Club de Getxo v Leioa | W | 0-3 |
| Segunda B, Relegation Group 2 | 2019/11/09 16:30 | Leioa v Osasuna B | D | 0-0 |
| Segunda B, Relegation Group 2 | 2019/11/03 11:00 | Tudelano v Leioa | L | 2-1 |
| Segunda B, Relegation Group 2 | 2019/10/26 14:00 | Leioa v Salamanque CF UDS | W | 2-1 |
| Segunda B, Relegation Group 2 | 2019/10/20 16:00 | Cultural Leonesa v Leioa | L | 2-0 |
| Segunda B, Relegation Group 2 | 2019/10/12 16:00 | Leioa v CD Calahorra | D | 3-3 |
| Segunda B, Relegation Group 2 | 2019/10/06 15:00 | Haro Deportivo v Leioa | D | 0-0 |