Sebastian Swierk defeated Sandro Della Piana 5-7 6-1 6-1 in the Australia 1 Masters 1 round of 32 on hard. The upset overturned the form book — Sandro Della Piana came in leading the head-to-head 1–0. Sebastian Swierk claimed a first win over Sandro Della Piana in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-03-01 | Australia 1 Masters 2 | R16 | hard | Sandro Della Piana | 6-4 6-4 |