Sebastian Swierk defeated Mark Thompson 6-1 6-2 in the Australia 1 Masters 4 round of 16 on hard. The result followed the form book — Sebastian Swierk came in leading the head-to-head 1–0. Sebastian Swierk extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-09-19 | Australia 3 Masters 3 | R32 | hard | Sebastian Swierk | 7-5 7-5 |