| A(D) | Club | VS | MD | |
|---|---|---|---|---|
| 15(362) | Neath | Padova | 31-Oct-1998 | Match Details |
| 16(27) | Ebbw Vale | Edinburgh Rugby | 27-Sep-1998 | Match Details |
| 17(361) | Colomiers | Glasgow Warriors | 10-Oct-1998 | Match Details |
| 19(278) | Toulouse | Ebbw Vale | 19-Sep-1998 | Match Details |
| 19(350) | Edinburgh Rugby | Toulouse | 31-Oct-1998 | Match Details |
| 19(114) | Pontypridd | Glasgow Warriors | 19-Sep-1998 | Match Details |
| 20(254) | Glasgow Warriors | Colomiers | 10-Oct-1998 | Match Details |
| 21(302) | Leinster | Scarlets | 06-Nov-1998 | Match Details |
| 21(305) | Munster | Padova | 19-Sep-1998 | Match Details |
| 22(280) | Begles-Bordeaux | Leinster | 31-Oct-1998 | Match Details |
| 24(322) | Scarlets | Leinster | 19-Sep-1998 | Match Details |
| 24(322) | Ulster | Ebbw Vale | 10-Oct-1998 | Match Details |
| 24(185) | Padova | Perpignan | 27-Sep-1998 | Match Details |
| 25(11) | Perpignan | Padova | 27-Sep-1998 | Match Details |
| 27(88) | Stade Francais | Begles-Bordeaux | 19-Sep-1998 | Match Details |
| 31(238) | Benetton Treviso | Glasgow Warriors | 26-Sep-1998 | Match Details |
MD = Match date,
A(D) = Age(days).