Face à face
| Segunda B, Relegation Group 2 | 2021/04/10 15:00 | Osasuna B v Real Unión | W | 0-2 |
| Segunda B, Relegation Group 2 | 2020/02/09 16:00 | Real Unión v Osasuna B | D | 1-1 |
| Segunda B, Relegation Group 2 | 2019/09/21 14:30 | Osasuna B v Real Unión | L | 4-2 |
| Segunda B, Relegation Group 2 | 2018/03/10 15:30 | Osasuna B v Real Unión | L | 1-0 |
| Segunda B, Relegation Group 2 | 2017/10/21 14:00 | Real Unión v Osasuna B | L | 1-3 |
| Europe - Matchs amicaux | 2017/08/05 17:00 | Real Unión v Osasuna B | L | 1-2 |