| Yellow | VS Club | Date | Sections | |
|---|---|---|---|---|
| 7 | RSC Anderlecht | 25-10-2018 | Group Stage | Match details |
| 5 | Zenit St Petersburg | 21-02-2019 | Round of 32 | Match details |
| 4 | Dinamo Zagreb | 29-11-2018 | Group Stage | Match details |
| 3 | Spartak Trnava | 04-10-2018 | Group Stage | Match details |
| 2 | Zenit St Petersburg | 12-02-2019 | Round of 32 | Match details |
