| Yellow | VS Club | Date | Sections | |
|---|---|---|---|---|
| 4 | FC Midtylland | 01-08-2018 | Second Round | Match details |
| 2 | Dinamo Zagreb | 14-08-2018 | Third Round | Match details |
| 1 | Dinamo Zagreb | 07-08-2018 | Third Round | Match details |
| 1 | FC Midtylland | 24-07-2018 | Second Round | Match details |
| 1 | FK Sutjeska Niksic | 11-07-2018 | First Round | Match details |
