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| 1st(1st leg) | AO Trikala | - | PAOK Saloniki | 1:5 (1:1) | ||
| 2nd (2nd leg) | PAOK Saloniki | - | AO Trikala | 2:1 (0:0) | ||
| 1st(1st leg): 19/12/2017 17:30 | 2nd (2nd leg): 09/01/2018 15:15 | Winner: PAOK Saloniki | ||||
| 1st(1st leg) | Asteras Tripolis | - | Atromitos | 0:1 (0:1) | ||
| 2nd (2nd leg) | Atromitos | - | Asteras Tripolis | 1:0 (1:0) | ||
| 1st(1st leg): 20/12/2017 13:00 | 2nd (2nd leg): 11/01/2018 17:30 | Winner: Atromitos | ||||
| 1st(1st leg) | Platanias Chanion | - | Olympiakos Piraeus | 0:2 (0:0) | ||
| 2nd (2nd leg) | Olympiakos Piraeus | - | Platanias Chanion | 2:0 (0:0) | ||
| 1st(1st leg): 20/12/2017 15:15 | 2nd (2nd leg): 10/01/2018 13:00 | Winner: Olympiakos Piraeus | ||||
| 1st(1st leg) | Panetolikos | - | AEK Athen | 0:4 (0:1) | ||
| 2nd (2nd leg) | AEK Athen | - | Panetolikos | 1:0 (0:0) | ||
| 1st(1st leg): 20/12/2017 17:30 | 2nd (2nd leg): 09/01/2018 17:30 | Winner: AEK Athen | ||||
| 1st(1st leg) | Panionios GSS | - | OFI Heraklion | 2:0 (0:0) | ||
| 2nd (2nd leg) | OFI Heraklion | - | Panionios GSS | 0:1 (0:1) | ||
| 1st(1st leg): 21/12/2017 13:00 | 2nd (2nd leg): 09/01/2018 13:00 | Winner: Panionios GSS | ||||
| 1st(1st leg) | AE Lárissa | - | Xanthi FC | 3:0 (2:0) | ||
| 2nd (2nd leg) | Xanthi FC | - | AE Lárissa | 2:0 (1:0) | ||
| 1st(1st leg): 21/12/2017 13:00 | 2nd (2nd leg): 10/01/2018 15:15 | Winner: AE Lárissa | ||||
| 1st(1st leg) | Lamia | - | Panathinaikos | 4:1 (3:0) | ||
| 2nd (2nd leg) | Panathinaikos | - | Lamia | 1:0 (0:0) | ||
| 1st(1st leg): 21/12/2017 15:15 | 2nd (2nd leg): 10/01/2018 17:30 | Winner: Lamia | ||||
| 1st(1st leg) | Levadiakos | - | PAS Giannina | 1:0 (0:0) | ||
| 2nd (2nd leg) | PAS Giannina | - | Levadiakos | 4:0 (2:0) | ||
| 1st(1st leg): 21/12/2017 17:30 | 2nd (2nd leg): 10/01/2018 15:15 | Winner: PAS Giannina | ||||
