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| U | KFC Germinal Ekeren | - | FK Sarajevo | 4:1 (3:0) | ||
| R | FK Sarajevo | - | KFC Germinal Ekeren | 0:0 (0:0) | ||
| U: 21.07.1998 20:30 | R: 28.07.1998 20:00 | Winnaars: KFC Germinal Ekeren | ||||
| U | Kolkheti-1913 Poti | - | Rode Ster Belgrado | 0:4 (0:1) | ||
| R | Rode Ster Belgrado | - | Kolkheti-1913 Poti | 7:0 (2:0) | ||
| U: 22.07.1998 15:00 | R: 29.07.1998 20:00 | Winnaars: Rode Ster Belgrado | ||||
| U | Argeș Pitești | - | Dinamo Baku | 5:1 (3:1) | ||
| R | Dinamo Baku | - | Argeș Pitești | 0:2 (0:0) | ||
| U: 22.07.1998 16:00 | R: 29.07.1998 15:00 | Winnaars: Argeș Pitești | ||||
| U | Shirak FC | - | Malmö FF | 0:2 (0:0) | ||
| R | Malmö FF | - | Shirak FC | 5:0 (3:0) | ||
| U: 22.07.1998 16:00 | R: 29.07.1998 19:00 | Winnaars: Malmö FF | ||||
| U | Oţelul Galaţi | - | FK Sloga Jugomagnat | 3:0 (2:0) | ||
| R | FK Sloga Jugomagnat | - | Oţelul Galaţi | 1:1 (1:0) | ||
| U: 22.07.1998 16:00 | R: 29.07.1998 20:00 | Winnaars: Oţelul Galaţi | ||||
| U | Tiligul Tiraspol | - | RSC Anderlecht | 0:1 (0:0) | ||
| R | RSC Anderlecht | - | Tiligul Tiraspol | 5:0 (2:0) | ||
| U: 22.07.1998 16:00 | R: 29.07.1998 20:00 | Winnaars: RSC Anderlecht | ||||
| U | Sadam Tallinn | - | Polonia Warszawa | 0:2 (0:1) | ||
| R | Polonia Warszawa | - | Sadam Tallinn | 3:1 (3:1) | ||
| U: 22.07.1998 17:00 | R: 29.07.1998 17:00 | Winnaars: Polonia Warszawa | ||||
| U | Hapoel Tel Aviv | - | FinnPa Helsinki | 3:1 (1:1) | ||
| R | FinnPa Helsinki | - | Hapoel Tel Aviv | 1:3 (0:2) | ||
| U: 22.07.1998 17:00 | R: 29.07.1998 17:30 | Winnaars: Hapoel Tel Aviv | ||||
| U | NK Mura Murska Sobota | - | FSK Daugava 90 | 6:1 (5:0) | ||
| R | FSK Daugava 90 | - | NK Mura Murska Sobota | 1:2 (0:0) | ||
| U: 22.07.1998 17:30 | R: 29.07.1998 18:00 | Winnaars: NK Mura Murska Sobota | ||||
| U | Belshina Bobruisk | - | CSKA Sofia | 0:0 (0:0) | ||
| R | CSKA Sofia | - | Belshina Bobruisk | 3:1 (2:0) | ||
| U: 22.07.1998 18:00 | R: 29.07.1998 17:30 | Winnaars: CSKA Sofia | ||||
| U | Shakhtar Donetsk | - | Birkirkara FC | 2:1 (0:0) | ||
| R | Birkirkara FC | - | Shakhtar Donetsk | 0:4 (0:1) | ||
| U: 22.07.1998 18:00 | R: 29.07.1998 18:00 | Winnaars: Shakhtar Donetsk | ||||
| U | Omonia Nikosia | - | Linfield FC | 5:1 (2:0) | ||
| R | Linfield FC | - | Omonia Nikosia | 5:3 (3:3) | ||
| U: 22.07.1998 19:00 | R: 29.07.1998 20:30 | Winnaars: Omonia Nikosia | ||||
| U | FK AŠK Inter Slovnaft Bratislava | - | KF Tiranë | 2:0 (1:0) | ||
| R | KF Tiranë | - | FK AŠK Inter Slovnaft Bratislava | 0:2 (0:0) | ||
| U: 22.07.1998 19:00 | R: 29.07.1998 17:00 | Winnaars: FK AŠK Inter Slovnaft Bratislava | ||||
| U | Ferencvárosi TC | - | CE Principat | 6:0 (2:0) | ||
| R | CE Principat | - | Ferencvárosi TC | 1:8 (1:2) | ||
| U: 22.07.1998 19:00 | R: 29.07.1998 22:00 | Winnaars: Ferencvárosi TC | ||||
| U | Union Luxembourg | - | IFK Göteborg | 0:3 (0:0) | ||
| R | IFK Göteborg | - | Union Luxembourg | 4:0 (1:0) | ||
| U: 22.07.1998 20:00 | R: 28.07.1998 19:00 | Winnaars: IFK Göteborg | ||||
| U | HB Tórshavn | - | Vaasan PS | 2:0 (1:0) | ||
| R | Vaasan PS | - | HB Tórshavn | 4:0 (2:0) | ||
| U: 22.07.1998 20:00 | R: 29.07.1998 19:00 | Winnaars: Vaasan PS | ||||
| U | Newtown AFC | - | Wisła Kraków | 0:0 (0:0) | ||
| R | Wisła Kraków | - | Newtown AFC | 7:0 (2:0) | ||
| U: 22.07.1998 20:00 | R: 29.07.1998 17:00 | Winnaars: Wisła Kraków | ||||
| U | Željezničar Sarajevo | - | Kilmarnock FC | 1:1 (0:0) | ||
| R | Kilmarnock FC | - | Željezničar Sarajevo | 1:0 (1:0) | ||
| U: 22.07.1998 20:30 | R: 29.07.1998 20:45 | Winnaars: Kilmarnock FC | ||||
| U | Shelbourne FC | - | Rangers FC | 3:5 (2:0) | ||
| R | Rangers FC | - | Shelbourne FC | 2:0 (1:0) | ||
| U: 22.07.1998 21:00 | R: 29.07.1998 20:45 | Winnaars: Rangers FC | ||||
| U | ÍA Akranes | - | FK Zalgiris | 3:2 (1:1) | ||
| R | FK Zalgiris | - | ÍA Akranes | 1:0 (1:0) | ||
| U: 22.07.1998 22:00 | R: 29.07.1998 17:00 | Winnaars: FK Zalgiris | ||||
