| Group A | 16/09/1998 | FC Porto | - | Olympiakos Piraeus | 2:2 | ||||
| Group A | 30/09/1998 | Olympiakos Piraeus | - | Croatia Zagreb | 2:0 | ||||
| Group A | 21/10/1998 | Olympiakos Piraeus | - | AFC Ajax | 1:0 | ||||
| Group A | 04/11/1998 | AFC Ajax | - | Olympiakos Piraeus | 2:0 | ||||
| Group A | 25/11/1998 | Olympiakos Piraeus | - | FC Porto | 2:1 |  |
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| Group A | 09/12/1998 | Croatia Zagreb | - | Olympiakos Piraeus | 1:1 | ||||
| Quarter-finals | 03/03/1999 | Juventus | - | Olympiakos Piraeus | 2:1 | ||||
| Quarter-finals | 17/03/1999 | Olympiakos Piraeus | - | Juventus | 1:1 |
Serbia
Yugoslavia