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 1–0. Ivan Cerovic claimed a first win over Frantisek Polyak in two meetings, levelling the head-to-head at 1–1.
Cerovic I. took it in straight sets.
Ivan Cerovic beat Frantisek Polyak 6-3 6-3. Umpiry, "Ivan Cerovic vs Frantisek Polyak — Croatia F5 Qualifying Round", https://umpiry.com/match/2004-08-23/cerovic-vs-polyak-croatia-f5-qf?utm_source=cite (as of 23 August 2004).