Head to Head
| Spain Segunda B Group 2 | 2019/03/24 16:00 | Racing Santander v Real Unión | D | 0-0 |
| Spain Segunda B Group 2 | 2018/11/04 16:00 | Real Unión v Racing Santander | W | 0-3 |
| Spain Segunda B Group 2 | 2018/05/13 16:00 | Racing Santander v Real Unión | L | 0-2 |
| Spain Segunda B Group 2 | 2017/12/17 16:00 | Real Unión v Racing Santander | W | 1-3 |