Damian Furmanski defeated Sebastian Weisz 7-5 6-1 in the Argentina 3 Masters 2 round of 32 on clay. The upset overturned the form book — Sebastian Weisz came in leading the head-to-head 1–0. Damian Furmanski claimed a first win over Sebastian Weisz in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-11-02 | Paraguay F1 | QF | clay | Sebastian Weisz | 6-4 7-6 |