Bostjan Osabnik defeated Sebo Kiss 6-1 6-0 in the Croatia F2 qualifying round on hard. The upset overturned the form book — Sebo Kiss came in leading the head-to-head 1–0. Bostjan Osabnik claimed a first win over Sebo Kiss in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-08-16 | Croatia F4 | R16 | clay | Sebo Kiss | 7-5 6-0 |