| Yellow | VS Club | Date | Sections | |
|---|---|---|---|---|
| 3 | RB Leipzig | 13-12-2018 | Group Stage | Match details |
| 2 | Celtic | 29-11-2018 | Group Stage | Match details |
| 2 | Salzburg | 25-10-2018 | Group Stage | Match details |
| 2 | Celtic | 20-09-2018 | Group Stage | Match details |
| 1 | RB Leipzig | 04-10-2018 | Group Stage | Match details |
