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| U | Rode Ster Belgrado | - | RB Salzburg | 0:0 (0:0) | ||
| R | RB Salzburg | - | Rode Ster Belgrado | 2:2 (1:0) | ||
| U: 21.08.2018 21:00 | R: 29.08.2018 21:00 | Winnaars: Rode Ster Belgrado | ||||
| U | BATE Borisov | - | PSV | 2:3 (1:1) | ||
| R | PSV | - | BATE Borisov | 3:0 (2:0) | ||
| U: 21.08.2018 21:00 | R: 29.08.2018 21:00 | Winnaars: PSV | ||||
| U | SL Benfica | - | PAOK Saloniki | 1:1 (1:0) | ||
| R | PAOK Saloniki | - | SL Benfica | 1:4 (1:3) | ||
| U: 21.08.2018 21:00 | R: 29.08.2018 21:00 | Winnaars: SL Benfica | ||||
| U | BSC Young Boys | - | Dinamo Zagreb | 1:1 (1:1) | ||
| R | Dinamo Zagreb | - | BSC Young Boys | 1:2 (1:0) | ||
| U: 22.08.2018 21:00 | R: 28.08.2018 21:00 | Winnaars: BSC Young Boys | ||||
| U | MOL Vidi FC | - | AEK Athene | 1:2 (0:1) | ||
| R | AEK Athene | - | MOL Vidi FC | 1:1 (0:0) | ||
| U: 22.08.2018 21:00 | R: 28.08.2018 21:00 | Winnaars: AEK Athene | ||||
| U | AFC Ajax | - | Dinamo Kiev | 3:1 (3:1) | ||
| R | Dinamo Kiev | - | AFC Ajax | 0:0 (0:0) | ||
| U: 22.08.2018 21:00 | R: 28.08.2018 21:00 | Winnaars: AFC Ajax | ||||
