| 2. Round | 24/03/1998 | Avispa Fukuoka | - | Kashiwa Reysol | 3:4 pso |  |
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| 4. Round | 03/04/1998 | Shimizu S-Pulse | - | Kashiwa Reysol | 0:2 | ||||
| 5. Round | 10/04/1998 | Kashiwa Reysol | - | Kashima Antlers | 3:2 | ||||
| 6. Round | 14/04/1998 | Kashiwa Reysol | - | Kyoto Purple Sanga | 3:2 aet | |
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| 7. Round | 17/04/1998 | Gamba Osaka | - | Kashiwa Reysol | 3:1 | ||||
| 8. Round | 24/04/1998 | Kashiwa Reysol | - | Yokohama F. Marinos | 0:4 | ||||
| 9. Round | 28/04/1998 | Urawa Red Diamonds | - | Kashiwa Reysol | 3:1 | ||||
| 10. Round | 01/05/1998 | Kashiwa Reysol | - | Nagoya Grampus Eight | 2:3 aet | ||||
| 11. Round | 04/05/1998 | Bellmare Hiratsuka | - | Kashiwa Reysol | 1:3 | ||||
| 12. Round | 08/05/1998 | Kashiwa Reysol | - | Júbilo Iwata | 1:3 | ||||
| 13. Round | 24/07/1998 | Verdy Kawasaki | - | Kashiwa Reysol | 1:3 | ||||
| 14. Round | 28/07/1998 | Kashiwa Reysol | - | Vissel Kobe | 4:0 | ||||
| 15. Round | 31/07/1998 | JEF United Ichihara | - | Kashiwa Reysol | 3:0 | ||||
| 16. Round | 04/08/1998 | Kashiwa Reysol | - | Yokohama Flügels | 1:3 | ||||
| 17. Round | 07/08/1998 | Cerezo Osaka | - | Kashiwa Reysol | 5:7 |
Japan