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| 1st(1st leg) | Panionios GSS | - | Lamia | 1:0 (0:0) | ||
| 2nd (2nd leg) | Lamia | - | Panionios GSS | 1:4 (1:2) | ||
| 1st(1st leg): 24/01/2018 15:15 | 2nd (2nd leg): 07/02/2018 19:45 | Winner: Panionios GSS | ||||
| 1st(1st leg) | Olympiakos Piraeus | - | AEK Athen | 0:0 (0:0) | ||
| 2nd (2nd leg) | AEK Athen | - | Olympiakos Piraeus | 2:1 (0:0) | ||
| 1st(1st leg): 24/01/2018 17:30 | 2nd (2nd leg): 07/02/2018 17:30 | Winner: AEK Athen | ||||
| 1st(1st leg) | PAOK Saloniki | - | Atromitos | 2:0 (1:0) | ||
| 2nd (2nd leg) | Atromitos | - | PAOK Saloniki | 1:3 (0:1) | ||
| 1st(1st leg): 24/01/2018 19:45 | 2nd (2nd leg): 08/02/2018 17:30 | Winner: PAOK Saloniki | ||||
| 1st(1st leg) | PAS Giannina | - | AE Lárissa | 1:2 (1:1) | ||
| 2nd (2nd leg) | AE Lárissa | - | PAS Giannina | 3:2 (1:1, 1:2) aet | ||
| 1st(1st leg): 25/01/2018 17:30 | 2nd (2nd leg): 07/02/2018 15:15 | Winner: AE Lárissa | ||||
