Jaka Bozic defeated Simon Wernhart 6-1 6-3 in the Croatia F4 semi-final on clay. The upset overturned the form book — Simon Wernhart came in leading the head-to-head 1–0. Jaka Bozic claimed a first win over Simon Wernhart in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-08-18 | Croatia F5 | R32 | clay | Simon Wernhart | 7-6 6-2 |