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| H | KFC Germinal Ekeren | - | FK Sarajevo | 4:1 (3:0) | ||
| R | FK Sarajevo | - | KFC Germinal Ekeren | 0:0 (0:0) | ||
| H: 21.07.1998 20:30 | R: 28.07.1998 20:00 | Sieger: KFC Germinal Ekeren | ||||
| H | Kolkheti-1913 Poti | - | Crvena Zvezda | 0:4 (0:1) | ||
| R | Crvena Zvezda | - | Kolkheti-1913 Poti | 7:0 (2:0) | ||
| H: 22.07.1998 15:00 | R: 29.07.1998 20:00 | Sieger: Crvena Zvezda | ||||
| H | Argeș Pitești | - | Dinamo Baku | 5:1 (3:1) | ||
| R | Dinamo Baku | - | Argeș Pitești | 0:2 (0:0) | ||
| H: 22.07.1998 16:00 | R: 29.07.1998 15:00 | Sieger: Argeș Pitești | ||||
| H | Shirak FC | - | Malmö FF | 0:2 (0:0) | ||
| R | Malmö FF | - | Shirak FC | 5:0 (3:0) | ||
| H: 22.07.1998 16:00 | R: 29.07.1998 19:00 | Sieger: Malmö FF | ||||
| H | Oţelul Galaţi | - | FK Sloga Jugomagnat | 3:0 (2:0) | ||
| R | FK Sloga Jugomagnat | - | Oţelul Galaţi | 1:1 (1:0) | ||
| H: 22.07.1998 16:00 | R: 29.07.1998 20:00 | Sieger: Oţelul Galaţi | ||||
| H | Tiligul Tiraspol | - | RSC Anderlecht | 0:1 (0:0) | ||
| R | RSC Anderlecht | - | Tiligul Tiraspol | 5:0 (2:0) | ||
| H: 22.07.1998 16:00 | R: 29.07.1998 20:00 | Sieger: RSC Anderlecht | ||||
| H | Sadam Tallinn | - | Polonia Warszawa | 0:2 (0:1) | ||
| R | Polonia Warszawa | - | Sadam Tallinn | 3:1 (3:1) | ||
| H: 22.07.1998 17:00 | R: 29.07.1998 17:00 | Sieger: Polonia Warszawa | ||||
| H | Hapoel Tel Aviv | - | FinnPa Helsinki | 3:1 (1:1) | ||
| R | FinnPa Helsinki | - | Hapoel Tel Aviv | 1:3 (0:2) | ||
| H: 22.07.1998 17:00 | R: 29.07.1998 17:30 | Sieger: Hapoel Tel Aviv | ||||
| H | NK Mura Murska Sobota | - | LU/Daugava Rīga | 6:1 (5:0) | ||
| R | LU/Daugava Rīga | - | NK Mura Murska Sobota | 1:2 (0:0) | ||
| H: 22.07.1998 17:30 | R: 29.07.1998 18:00 | Sieger: NK Mura Murska Sobota | ||||
| H | Belshina Bobruisk | - | CSKA Sofia | 0:0 (0:0) | ||
| R | CSKA Sofia | - | Belshina Bobruisk | 3:1 (2:0) | ||
| H: 22.07.1998 18:00 | R: 29.07.1998 17:30 | Sieger: CSKA Sofia | ||||
| H | Shakhtar Donetsk | - | Birkirkara FC | 2:1 (0:0) | ||
| R | Birkirkara FC | - | Shakhtar Donetsk | 0:4 (0:1) | ||
| H: 22.07.1998 18:00 | R: 29.07.1998 18:00 | Sieger: Shakhtar Donetsk | ||||
| H | Omonia Nikosia | - | Linfield FC | 5:1 (2:0) | ||
| R | Linfield FC | - | Omonia Nikosia | 5:3 (3:3) | ||
| H: 22.07.1998 19:00 | R: 29.07.1998 20:30 | Sieger: Omonia Nikosia | ||||
| H | FK AŠK Inter Slovnaft Bratislava | - | KF Tiranë | 2:0 (1:0) | ||
| R | KF Tiranë | - | FK AŠK Inter Slovnaft Bratislava | 0:2 (0:0) | ||
| H: 22.07.1998 19:00 | R: 29.07.1998 17:00 | Sieger: FK AŠK Inter Slovnaft Bratislava | ||||
| H | Ferencvárosi TC | - | CE Principat | 6:0 (2:0) | ||
| R | CE Principat | - | Ferencvárosi TC | 1:8 (1:2) | ||
| H: 22.07.1998 19:00 | R: 29.07.1998 22:00 | Sieger: Ferencvárosi TC | ||||
| H | Union Luxembourg | - | IFK Göteborg | 0:3 (0:0) | ||
| R | IFK Göteborg | - | Union Luxembourg | 4:0 (1:0) | ||
| H: 22.07.1998 20:00 | R: 28.07.1998 19:00 | Sieger: IFK Göteborg | ||||
| H | HB Tórshavn | - | Vaasan PS | 2:0 (1:0) | ||
| R | Vaasan PS | - | HB Tórshavn | 4:0 (2:0) | ||
| H: 22.07.1998 20:00 | R: 29.07.1998 19:00 | Sieger: Vaasan PS | ||||
| H | Newtown AFC | - | Wisła Kraków | 0:0 (0:0) | ||
| R | Wisła Kraków | - | Newtown AFC | 7:0 (2:0) | ||
| H: 22.07.1998 20:00 | R: 29.07.1998 17:00 | Sieger: Wisła Kraków | ||||
| H | Željezničar Sarajevo | - | Kilmarnock FC | 1:1 (0:0) | ||
| R | Kilmarnock FC | - | Željezničar Sarajevo | 1:0 (1:0) | ||
| H: 22.07.1998 20:30 | R: 29.07.1998 20:45 | Sieger: Kilmarnock FC | ||||
| H | Shelbourne FC | - | Rangers FC | 3:5 (2:0) | ||
| R | Rangers FC | - | Shelbourne FC | 2:0 (1:0) | ||
| H: 22.07.1998 21:00 | R: 29.07.1998 20:45 | Sieger: Rangers FC | ||||
| H | ÍA Akranes | - | FK Zalgiris | 3:2 (1:1) | ||
| R | FK Zalgiris | - | ÍA Akranes | 1:0 (1:0) | ||
| H: 22.07.1998 22:00 | R: 29.07.1998 17:00 | Sieger: FK Zalgiris | ||||
