| Yellow | VS Club | Date | Sections | |
|---|---|---|---|---|
| 4 | Olympiakos | 25-11-1998 | Group Stage | Match details |
| 3 | AFC Ajax | 09-12-1998 | Group Stage | Match details |
| 3 | Dinamo Zagreb | 04-11-1998 | Group Stage | Match details |
| 3 | Olympiakos | 16-09-1998 | Group Stage | Match details |
| 2 | AFC Ajax | 30-09-1998 | Group Stage | Match details |
