| A(D) | Club | VS | MD | |
|---|---|---|---|---|
| 17(143) | Neath | Padova | 31-Oct-1998 | Match Details |
| 19(32) | Munster | Colomiers | 12-Dec-1998 | Match Details |
| 19(110) | Leinster | Begles-Bordeaux | 09-Oct-1998 | Match Details |
| 20(199) | Ebbw Vale | Edinburgh Rugby | 27-Sep-1998 | Match Details |
| 20(113) | Pontypridd | Glasgow Warriors | 19-Sep-1998 | Match Details |
| 20(120) | Padova | Perpignan | 27-Sep-1998 | Match Details |
| 21(230) | Glasgow Warriors | Pontypridd | 19-Sep-1998 | Match Details |
| 21(277) | Colomiers | Glasgow Warriors | 10-Oct-1998 | Match Details |
| 22(101) | Perpignan | Scarlets | 12-Dec-1998 | Match Details |
| 22(148) | Ulster | Ebbw Vale | 10-Oct-1998 | Match Details |
| 23(193) | Edinburgh Rugby | Ulster | 08-Nov-1998 | Match Details |
| 23(5) | Toulouse | Ebbw Vale | 07-Nov-1998 | Match Details |
| 24(15) | Begles-Bordeaux | Scarlets | 26-Sep-1998 | Match Details |
| 25(216) | Scarlets | Leinster | 19-Sep-1998 | Match Details |
| 27(142) | Stade Francais | Begles-Bordeaux | 19-Sep-1998 | Match Details |
| 28(116) | Benetton Treviso | Colomiers | 19-Sep-1998 | Match Details |
MD = Match date,
A(D) = Age(days).