[7] Athletic Bilbao B 4-0 Real Unión [3] 2017-09-02 14:00
Weather: Good Stadium: San Mames Stadium Pitch: Excellent Round: 3
Head to Head
| Spain Segunda B Group 2 | 2017/04/02 09:30 | Athletic Bilbao B v Real Unión | L | 1-2 |
| Spain Segunda B Group 2 | 2016/11/05 15:00 | Real Unión v Athletic Bilbao B | L | 3-1 |
| Spain Segunda B Group 2 | 2015/03/14 15:00 | Athletic Bilbao B v Real Unión | L | 1-2 |
| Spain Segunda B Group 2 | 2014/10/26 16:00 | Real Unión v Athletic Bilbao B | D | 1-1 |
Home History
| Spain Segunda B Group 2 | 2017/08/26 14:00 | Real Sociedad B v Athletic Bilbao B | W | 0-3 |
| Spain Segunda B Group 2 | 2017/08/20 09:30 | Athletic Bilbao B v UD Logrones | L | 1-2 |
| Europe Friendlies | 2017/08/12 17:30 | Athletic Bilbao B v Barakaldo | W | 1-0 |
| Europe Friendlies | 2017/08/09 17:30 | Zamudio v Athletic Bilbao B | W | 0-5 |
| Europe Friendlies | 2017/08/05 17:00 | Numancia v Athletic Bilbao B | L | 1-0 |
| Europe Friendlies | 2017/08/02 17:00 | Burgos v Athletic Bilbao B | L | 2-1 |
| Europe Friendlies | 2017/07/31 17:00 | Portugalete v Athletic Bilbao B | W | 0-2 |
| Spain Segunda B Group 2 | 2017/05/14 09:30 | Athletic Bilbao B v Toledo | W | 3-0 |
Away History
| Spain Copa del Rey | 2017/08/30 16:00 | CD Calahorra v Real Unión | L | 1-0 |
| Spain Segunda B Group 2 | 2017/08/26 17:00 | Real Unión v Izarra | W | 1-0 |
| Spain Segunda B Group 2 | 2017/08/20 09:30 | Pena Sport v Real Unión | W | 0-1 |
| Europe Friendlies | 2017/08/09 16:57 | Real Sociedad B v Real Unión | L | 2-0 |
| Europe Friendlies | 2017/08/05 17:00 | Real Unión v Osasuna B | L | 1-2 |
| Europe Friendlies | 2017/07/17 17:30 | Eibar v Real Unión | L | 3-1 |
| Spain Segunda B Group 2 | 2017/05/14 16:00 | Navalcarnero v Real Unión | L | 2-0 |
| Spain Segunda B Group 2 | 2017/05/07 16:00 | Real Unión v UD San Sebastian Reyes | D | 1-1 |