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| U | FK Mladá Boleslav | - | KF Skënderbeu | 2:1 (1:0) | ||
| R | KF Skënderbeu | - | FK Mladá Boleslav | 4:2 (0:1, 2:1, 2:1) d.p. | ||
| U: 27.07.2017 18:00 | R: 03.08.2017 20:00 | Winnaars: KF Skënderbeu | ||||
| U | FK Trakai | - | KF Shkëndija 79 | 2:1 (1:1) | ||
| R | KF Shkëndija 79 | - | FK Trakai | 3:0 (2:0) | ||
| U: 27.07.2017 18:30 | R: 03.08.2017 17:00 | Winnaars: KF Shkëndija 79 | ||||
| U | Olimpik Donetsk | - | PAOK Saloniki | 1:1 (0:0) | ||
| R | PAOK Saloniki | - | Olimpik Donetsk | 2:0 (2:0) | ||
| U: 27.07.2017 18:30 | R: 03.08.2017 20:00 | Winnaars: PAOK Saloniki | ||||
| U | Maccabi Tel Aviv | - | Panionios GSS | 1:0 (0:0) | ||
| R | Panionios GSS | - | Maccabi Tel Aviv | 0:1 (0:0) | ||
| U: 27.07.2017 18:45 | R: 03.08.2017 21:00 | Winnaars: Maccabi Tel Aviv | ||||
| U | PSV | - | NK Osijek | 0:1 (0:0) | ||
| R | NK Osijek | - | PSV | 1:0 (1:0) | ||
| U: 27.07.2017 19:00 | R: 03.08.2017 20:45 | Winnaars: NK Osijek | ||||
| U | FK Krasnodar | - | Lyngby BK | 2:1 (0:0) | ||
| R | Lyngby BK | - | FK Krasnodar | 1:3 (1:2) | ||
| U: 27.07.2017 19:00 | R: 03.08.2017 19:45 | Winnaars: FK Krasnodar | ||||
| U | Sturm Graz | - | Fenerbahçe | 1:2 (1:2) | ||
| R | Fenerbahçe | - | Sturm Graz | 1:1 (1:0) | ||
| U: 27.07.2017 19:00 | R: 03.08.2017 19:30 | Winnaars: Fenerbahçe | ||||
| U | Östersunds FK | - | CS FOLA Esch | 1:0 (0:0) | ||
| R | CS FOLA Esch | - | Östersunds FK | 1:2 (0:0) | ||
| U: 27.07.2017 19:00 | R: 03.08.2017 19:30 | Winnaars: Östersunds FK | ||||
| U | FC Utrecht | - | Lech Poznań | 0:0 (0:0) | ||
| R | Lech Poznań | - | FC Utrecht | 2:2 (1:1) | ||
| U: 27.07.2017 19:00 | R: 03.08.2017 20:15 | Winnaars: FC Utrecht | ||||
| U | AEK Larnaca | - | Dinamo Minsk | 2:0 (1:0) | ||
| R | Dinamo Minsk | - | AEK Larnaca | 1:1 (0:0) | ||
| U: 27.07.2017 19:00 | R: 03.08.2017 17:00 | Winnaars: AEK Larnaca | ||||
| U | AIK Solna | - | Sporting Braga | 1:1 (1:1) | ||
| R | Sporting Braga | - | AIK Solna | 2:1 (0:1, 1:1) n.v. | ||
| U: 27.07.2017 19:00 | R: 03.08.2017 22:00 | Winnaars: Sporting Braga | ||||
| U | FK Sūduva | - | FC Sion | 3:0 (2:0) | ||
| R | FC Sion | - | FK Sūduva | 1:1 (0:0) | ||
| U: 27.07.2017 19:00 | R: 02.08.2017 18:00 | Winnaars: FK Sūduva | ||||
| U | Bnei Yehuda Tel Aviv | - | Zenit St. Petersburg | 0:2 (0:0) | ||
| R | Zenit St. Petersburg | - | Bnei Yehuda Tel Aviv | 0:1 (0:0) | ||
| U: 27.07.2017 19:30 | R: 03.08.2017 19:00 | Winnaars: Zenit St. Petersburg | ||||
| U | Astra Giurgiu | - | FK Oleksandriya | 0:0 (0:0) | ||
| R | FK Oleksandriya | - | Astra Giurgiu | 1:0 (1:0) | ||
| U: 27.07.2017 19:30 | R: 03.08.2017 19:00 | Winnaars: FK Oleksandriya | ||||
| U | Dinamo Boekarest | - | Athletic Bilbao | 1:1 (0:1) | ||
| R | Athletic Bilbao | - | Dinamo Boekarest | 3:0 (2:0) | ||
| U: 27.07.2017 19:30 | R: 03.08.2017 20:45 | Winnaars: Athletic Bilbao | ||||
| U | Botev Plovdiv | - | CS Marítimo | 0:0 (0:0) | ||
| R | CS Marítimo | - | Botev Plovdiv | 2:0 (1:0) | ||
| U: 27.07.2017 19:30 | R: 03.08.2017 20:00 | Winnaars: CS Marítimo | ||||
| U | CS Universitatea Craiova | - | AC Milan | 0:1 (0:1) | ||
| R | AC Milan | - | CS Universitatea Craiova | 2:0 (1:0) | ||
| U: 27.07.2017 20:00 | R: 03.08.2017 20:45 | Winnaars: AC Milan | ||||
| U | Arka Gdynia | - | FC Midtjylland | 3:2 (2:2) | ||
| R | FC Midtjylland | - | Arka Gdynia | 2:1 (0:0) | ||
| U: 27.07.2017 20:00 | R: 03.08.2017 20:30 | Winnaars: FC Midtjylland | ||||
| U | Brøndby IF | - | Hajduk Split | 0:0 (0:0) | ||
| R | Hajduk Split | - | Brøndby IF | 2:0 (0:0) | ||
| U: 27.07.2017 20:00 | R: 03.08.2017 20:30 | Winnaars: Hajduk Split | ||||
| U | Panathinaikos | - | Gabala FK | 1:0 (1:0) | ||
| R | Gabala FK | - | Panathinaikos | 1:2 (0:0) | ||
| U: 27.07.2017 20:30 | R: 03.08.2017 19:00 | Winnaars: Panathinaikos | ||||
| U | KAA Gent | - | SCR Altach | 1:1 (0:1) | ||
| R | SCR Altach | - | KAA Gent | 3:1 (1:1) | ||
| U: 27.07.2017 20:30 | R: 03.08.2017 20:30 | Winnaars: SCR Altach | ||||
| U | Girondins Bordeaux | - | Videoton FC | 2:1 (2:1) | ||
| R | Videoton FC | - | Girondins Bordeaux | 1:0 (1:0) | ||
| U: 27.07.2017 20:30 | R: 03.08.2017 19:00 | Winnaars: Videoton FC | ||||
| U | Rode Ster Belgrado | - | Sparta Praag | 2:0 (1:0) | ||
| R | Sparta Praag | - | Rode Ster Belgrado | 0:1 (0:1) | ||
| U: 27.07.2017 20:30 | R: 03.08.2017 19:00 | Winnaars: Rode Ster Belgrado | ||||
| U | Olympique Marseille | - | KV Oostende | 4:2 (2:1) | ||
| R | KV Oostende | - | Olympique Marseille | 0:0 (0:0) | ||
| U: 27.07.2017 20:45 | R: 03.08.2017 20:45 | Winnaars: Olympique Marseille | ||||
| U | Dinamo Zagreb | - | Odds BK | 2:1 (2:1) | ||
| R | Odds BK | - | Dinamo Zagreb | 0:0 (0:0) | ||
| U: 27.07.2017 20:45 | R: 03.08.2017 18:30 | Winnaars: Dinamo Zagreb | ||||
| U | Aberdeen FC | - | Apollon Limassol | 2:1 (1:0) | ||
| R | Apollon Limassol | - | Aberdeen FC | 2:0 (1:0) | ||
| U: 27.07.2017 20:45 | R: 03.08.2017 19:00 | Winnaars: Apollon Limassol | ||||
| U | Austria Wien | - | AEL Limassol | 0:0 (0:0) | ||
| R | AEL Limassol | - | Austria Wien | 1:2 (0:1) | ||
| U: 27.07.2017 21:05 | R: 02.08.2017 18:00 | Winnaars: Austria Wien | ||||
| U | Everton FC | - | MFK Ružomberok | 1:0 (0:0) | ||
| R | MFK Ružomberok | - | Everton FC | 0:1 (0:0) | ||
| U: 27.07.2017 21:05 | R: 03.08.2017 20:45 | Winnaars: Everton FC | ||||
| U | SC Freiburg | - | NK Domžale | 1:0 (1:0) | ||
| R | NK Domžale | - | SC Freiburg | 2:0 (0:0) | ||
| U: 27.07.2017 21:05 | R: 03.08.2017 21:05 | Winnaars: NK Domžale | ||||
