| Yellow | VS Club | Date | Sections | |
|---|---|---|---|---|
| 3 | AC Milan | 29-11-2018 | Group Stage | Match details |
| 3 | Real Betis | 04-10-2018 | Group Stage | Match details |
| 2 | Real Betis | 13-12-2018 | Group Stage | Match details |
| 2 | Olympiakos | 08-11-2018 | Group Stage | Match details |
| 2 | AC Milan | 20-09-2018 | Group Stage | Match details |
| 1 | Olympiakos | 25-10-2018 | Group Stage | Match details |
