| Yellow | VS Club | Date | Sections | |
|---|---|---|---|---|
| 6 | Real Sociedad | 15-02-2018 | Round of 32 | Match details |
| 5 | Olympique Marseille | 03-05-2018 | Semi-finals | Match details |
| 4 | Borussia Dortmund | 15-03-2018 | Round of 16 | Match details |
| 3 | SS Lazio | 12-04-2018 | Quarter-finals | Match details |
| 3 | Borussia Dortmund | 08-03-2018 | Round of 16 | Match details |
