Sebo Kiss defeated Frantisek Polyak 6-1 6-4 in the Croatia F4 qualifying round on clay. The upset overturned the form book — Frantisek Polyak came in leading the head-to-head 1–0, but Sebo Kiss had been the form player, winning 5 of their last 8 on clay. Sebo Kiss claimed a first win over Frantisek Polyak in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-05-02 | Hungary F2 | R16 | clay | Frantisek Polyak | 7-6(4) 6-4 |