Ivan Cerovic defeated Frantisek Polyak 6-3 6-3 in the Croatia F5 qualifying round on clay. The upset overturned the form book — Frantisek Polyak came in leading the head-to-head 2–0. Ivan Cerovic claimed a first win over Frantisek Polyak in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-05-09 | Hungary F3 | R16 | clay | Frantisek Polyak | 6-3 6-4 |
| 2004-08-16 | Croatia F4 | R32 | clay | Frantisek Polyak | 6-4 6-4 |