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| 1st(1st leg) | CD Leganés | - | Sevilla FC | 1:1 (0:1) | ||
| 2nd (2nd leg) | Sevilla FC | - | CD Leganés | 2:0 (1:0) | ||
| 1st(1st leg): 31/01/2018 20:30 | 2nd (2nd leg): 07/02/2018 20:30 | Winner: Sevilla FC | ||||
| 1st(1st leg) | FC Barcelona | - | Valencia CF | 1:0 (0:0) | ||
| 2nd (2nd leg) | Valencia CF | - | FC Barcelona | 0:2 (0:0) | ||
| 1st(1st leg): 01/02/2018 20:30 | 2nd (2nd leg): 08/02/2018 20:30 | Winner: FC Barcelona | ||||
