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| I | Dinamo Tbilisi | - | Athletic | 2:1 (2:0) | ||
| V | Athletic | - | Dinamo Tbilisi | 1:0 (0:0) | ||
| I: 12.08.1998 17:00 | V: 26.08.1998 20:30 | Campeones: Athletic | ||||
| I | Galatasaray | - | Grasshopper Club Zürich | 2:1 (0:0) | ||
| V | Grasshopper Club Zürich | - | Galatasaray | 2:3 (1:2) | ||
| I: 12.08.1998 18:00 | V: 26.08.1998 20:00 | Campeones: Galatasaray | ||||
| I | HJK Helsinki | - | FC Metz | 1:0 (0:0) | ||
| V | FC Metz | - | HJK Helsinki | 1:1 (0:0) | ||
| I: 12.08.1998 18:00 | V: 26.08.1998 20:00 | Campeones: HJK Helsinki | ||||
| I | Dinamo Kiev | - | Sparta Praga | 0:1 (0:1) | ||
| V | Sparta Praga | - | Dinamo Kiev | 1:3 (0:0, 0:1, 0:1) pn. | ||
| I: 12.08.1998 19:00 | V: 26.08.1998 20:15 | Campeones: Dinamo Kiev | ||||
| I | 1. FC Košice | - | Brøndby IF | 0:2 (0:0) | ||
| V | Brøndby IF | - | 1. FC Košice | 0:1 (0:1) | ||
| I: 12.08.1998 19:00 | V: 26.08.1998 20:10 | Campeones: Brøndby IF | ||||
| I | AFC Steaua București | - | Panathinaikos | 2:2 (1:1) | ||
| V | Panathinaikos | - | AFC Steaua București | 6:3 (3:2) | ||
| I: 12.08.1998 19:45 | V: 26.08.1998 20:00 | Campeones: Panathinaikos | ||||
| I | Rosenborg BK | - | Club Brugge KV | 2:0 (0:0) | ||
| V | Club Brugge KV | - | Rosenborg BK | 4:2 (1:1) | ||
| I: 12.08.1998 20:15 | V: 26.08.1998 20:15 | Campeones: Rosenborg BK | ||||
| I | PFC Litex Lovech | - | Spartak Moskva | 0:5 (0:0) | ||
| V | Spartak Moskva | - | PFC Litex Lovech | 6:2 (3:1) | ||
| I: 12.08.1998 20:15 | V: 26.08.1998 17:00 | Campeones: Spartak Moskva | ||||
| I | Maribor Teatanic | - | PSV | 2:1 (1:0) | ||
| V | PSV | - | Maribor Teatanic | 4:1 (1:1, 2:1, 4:1) pró. | ||
| I: 12.08.1998 20:15 | V: 26.08.1998 20:00 | Campeones: PSV | ||||
| I | Olympiacos | - | Anorthosis Famagusta | 2:1 (2:0) | ||
| V | Anorthosis Famagusta | - | Olympiacos | 2:4 (1:0) | ||
| I: 12.08.1998 20:30 | V: 26.08.1998 20:00 | Campeones: Olympiacos | ||||
| I | Bayern Múnich | - | FK Obilić | 4:0 (0:0) | ||
| V | FK Obilić | - | Bayern Múnich | 1:1 (0:0) | ||
| I: 12.08.1998 20:30 | V: 26.08.1998 20:30 | Campeones: Bayern Múnich | ||||
| I | Sturm Graz | - | Újpest FC | 4:0 (1:0) | ||
| V | Újpest FC | - | Sturm Graz | 2:3 (1:1) | ||
| I: 12.08.1998 20:30 | V: 26.08.1998 20:30 | Campeones: Sturm Graz | ||||
| I | Manchester United | - | ŁKS Łódź | 2:0 (1:0) | ||
| V | ŁKS Łódź | - | Manchester United | 0:0 (0:0) | ||
| I: 12.08.1998 20:45 | V: 26.08.1998 21:05 | Campeones: Manchester United | ||||
| I | Celtic FC | - | Croatia Zagreb | 1:0 (0:0) | ||
| V | Croatia Zagreb | - | Celtic FC | 3:0 (2:0) | ||
| I: 12.08.1998 20:45 | V: 26.08.1998 20:30 | Campeones: Croatia Zagreb | ||||
| I | Inter | - | Skonto FC | 4:0 (3:0) | ||
| V | Skonto FC | - | Inter | 1:3 (1:1) | ||
| I: 12.08.1998 20:45 | V: 26.08.1998 20:00 | Campeones: Inter | ||||
| I | Benfica | - | Beitar Jerusalem | 6:0 (2:0) | ||
| V | Beitar Jerusalem | - | Benfica | 4:2 (2:1) | ||
| I: 12.08.1998 22:00 | V: 26.08.1998 17:00 | Campeones: Benfica | ||||
