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| U | CS Herediano | - | UANL Tigres | 2:2 (0:1) | ||
| R | UANL Tigres | - | CS Herediano | 3:1 (0:0) | ||
| U: 21.02.2018 02:00 | R: 28.02.2018 02:00 | Winnaars: UANL Tigres | ||||
| U | Colorado Rapids | - | Toronto FC | 0:2 (0:0) | ||
| R | Toronto FC | - | Colorado Rapids | 0:0 (0:0) | ||
| U: 21.02.2018 04:00 | R: 28.02.2018 02:00 | Winnaars: Toronto FC | ||||
| U | Tauro FC | - | FC Dallas | 1:0 (0:0) | ||
| R | FC Dallas | - | Tauro FC | 3:2 (1:2) | ||
| U: 22.02.2018 02:00 | R: 01.03.2018 02:00 | Winnaars: Tauro FC | ||||
| U | Deportivo Saprissa | - | CF América | 1:5 (0:3) | ||
| R | CF América | - | Deportivo Saprissa | 1:1 (1:0) | ||
| U: 22.02.2018 02:00 | R: 01.03.2018 04:00 | Winnaars: CF América | ||||
| U | Motagua | - | Club Tijuana | 0:1 (0:0) | ||
| R | Club Tijuana | - | Motagua | 1:1 (1:0) | ||
| U: 22.02.2018 04:00 | R: 28.02.2018 04:00 | Winnaars: Club Tijuana | ||||
| U | Cibao FC | - | Deportivo Guadalajara | 0:2 (0:1) | ||
| R | Deportivo Guadalajara | - | Cibao FC | 5:0 (1:0) | ||
| U: 23.02.2018 02:00 | R: 01.03.2018 02:00 | Winnaars: Deportivo Guadalajara | ||||
| U | Santa Tecla FC | - | Seattle Sounders | 2:1 (0:1) | ||
| R | Seattle Sounders | - | Santa Tecla FC | 4:0 (0:0) | ||
| U: 23.02.2018 04:00 | R: 02.03.2018 04:00 | Winnaars: Seattle Sounders | ||||
| U | Olimpia | - | New York RB | 1:1 (0:1) | ||
| R | New York RB | - | Olimpia | 2:0 (0:0) | ||
| U: 23.02.2018 04:00 | R: 02.03.2018 02:00 | Winnaars: New York RB | ||||
