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| 1st(1st leg) | Pontevedra CF | - | Real Murcia | 1:3 (0:2) | ||
| 2nd (2nd leg) | Real Murcia | - | Pontevedra CF | 1:1 (0:0) | ||
| 1st(1st leg): 20/05/2017 19:00 | 2nd (2nd leg): 28/05/2017 18:00 | Winner: Real Murcia | ||||
| 1st(1st leg) | Atlético Baleares | - | CD Toledo | 1:0 (1:0) | ||
| 2nd (2nd leg) | CD Toledo | - | Atlético Baleares | 1:2 (1:0) | ||
| 1st(1st leg): 21/05/2017 11:00 | 2nd (2nd leg): 28/05/2017 11:00 | Winner: Atlético Baleares | ||||
| 1st(1st leg) | Rayo Majadahonda | - | Racing Santander | 1:3 (0:0) | ||
| 2nd (2nd leg) | Racing Santander | - | Rayo Majadahonda | 3:0 (0:0) | ||
| 1st(1st leg): 21/05/2017 11:00 | 2nd (2nd leg): 28/05/2017 17:00 | Winner: Racing Santander | ||||
| 1st(1st leg) | RC Celta B | - | Valencia CF B | 2:3 (1:2) | ||
| 2nd (2nd leg) | Valencia CF B | - | RC Celta B | 3:1 (1:1) | ||
| 1st(1st leg): 21/05/2017 11:00 | 2nd (2nd leg): 27/05/2017 17:00 | Winner: Valencia CF B | ||||
| 1st(1st leg) | FC Cartagena | - | CD Alcoyano | 0:0 (0:0) | ||
| 2nd (2nd leg) | CD Alcoyano | - | FC Cartagena | 0:2 (0:0) | ||
| 1st(1st leg): 21/05/2017 17:00 | 2nd (2nd leg): 28/05/2017 19:00 | Winner: FC Cartagena | ||||
| 1st(1st leg) | CF Villanovense | - | CF Fuenlabrada | 1:0 (0:0) | ||
| 2nd (2nd leg) | CF Fuenlabrada | - | CF Villanovense | 0:1 (0:0) | ||
| 1st(1st leg): 21/05/2017 17:00 | 2nd (2nd leg): 28/05/2017 17:00 | Winner: CF Villanovense | ||||
