| Yellow | VS Club | Date | Sections | |
|---|---|---|---|---|
| 5 | FC Porto | 19-10-2021 | Group Stage | Match details |
| 5 | Atletico Madrid | 28-09-2021 | Group Stage | Match details |
| 3 | Atletico Madrid | 24-11-2021 | Group Stage | Match details |
| 2 | Liverpool | 15-09-2021 | Group Stage | Match details |
| 1 | FC Porto | 03-11-2021 | Group Stage | Match details |
