Blaz Trupej defeated Nunzio Di Pietro 6-3 6-4 in the Croatia F5 qualifying round on clay. The upset overturned the form book — Nunzio Di Pietro came in leading the head-to-head 1–0. Blaz Trupej claimed a first win over Nunzio Di Pietro in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-08-10 | Croatia F4 | R32 | clay | Nunzio Di Pietro | 7-6 7-5 |