Anton Klaric defeated Sebastian Swierk 6-4 7-6 in the Australia 3 Masters 3 round of 32 on hard. The upset overturned the form book — Sebastian Swierk came in leading the head-to-head 1–0. Anton Klaric claimed a first win over Sebastian Swierk in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-09-19 | Australia 3 Masters 2 | R32 | hard | Sebastian Swierk | 7-6 6-4 |