Mark Thompson defeated Ali Hamadeh 7-5 6-3 in the Australia 1 Masters 1 round of 32 on hard. The upset overturned the form book — Ali Hamadeh came in leading the head-to-head 1–0. Mark Thompson claimed a first win over Ali Hamadeh in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-06-22 | Canada F2 | R32 | hard | Ali Hamadeh | 6-3 6-4 |