Sebo Kiss defeated Bostjan Osabnik 7-5 6-0 in the Croatia F4 round of 16 on clay. The upset overturned the form book — Bostjan Osabnik came in leading the head-to-head 1–0. Sebo Kiss claimed a first win over Bostjan Osabnik in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-02-21 | Croatia F2 | QF | hard | Bostjan Osabnik | 6-1 6-0 |