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| 1st(1st leg) | OFK Beograd | - | Atlético Madrid | 1:3 (0:2) | ||
| 2nd (2nd leg) | Atlético Madrid | - | OFK Beograd | 2:0 (1:0) | ||
| 1st(1st leg): 28/07/2004 17:00 | 2nd (2nd leg): 04/08/2004 20:45 | Winner: Atlético Madrid | ||||
| 1st(1st leg) | KRC Genk | - | União Leiria | 0:0 (0:0) | ||
| 2nd (2nd leg) | União Leiria | - | KRC Genk | 2:0 (2:0) | ||
| 1st(1st leg): 28/07/2004 17:00 | 2nd (2nd leg): 04/08/2004 21:00 | Winner: União Leiria | ||||
| 1st(1st leg) | Lille OSC | - | Slaven Belupo | 3:0 (2:0) | ||
| 2nd (2nd leg) | Slaven Belupo | - | Lille OSC | 1:1 (1:0) | ||
| 1st(1st leg): 28/07/2004 18:00 | 2nd (2nd leg): 04/08/2004 17:00 | Winner: Lille OSC | ||||
| 1st(1st leg) | Slovan Liberec | - | FC Nantes | 1:0 (1:0) | ||
| 2nd (2nd leg) | FC Nantes | - | Slovan Liberec | 2:1 (2:1) | ||
| 1st(1st leg): 28/07/2004 18:00 | 2nd (2nd leg): 04/08/2004 19:00 | Winner: Slovan Liberec | ||||
| 1st(1st leg) | Esbjerg fB | - | FC Schalke 04 | 1:3 (1:1) | ||
| 2nd (2nd leg) | FC Schalke 04 | - | Esbjerg fB | 3:0 (1:0) | ||
| 1st(1st leg): 28/07/2004 18:45 | 2nd (2nd leg): 03/08/2004 19:15 | Winner: FC Schalke 04 | ||||
| 1st(1st leg) | Villarreal CF | - | Hamburger SV | 1:0 (0:0) | ||
| 2nd (2nd leg) | Hamburger SV | - | Villarreal CF | 0:1 (0:0) | ||
| 1st(1st leg): 28/07/2004 21:00 | 2nd (2nd leg): 04/08/2004 19:15 | Winner: Villarreal CF | ||||
