Luka Kutanjac defeated Josip Dumanic 6-2 1-6 6-1 in the Croatia 4 Masters 2 round of 32 on clay. The upset overturned the form book — Josip Dumanic came in leading the head-to-head 1–0. Luka Kutanjac claimed a first win over Josip Dumanic in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-08-09 | Croatia 4 Masters 1 | R16 | clay | Josip Dumanic | 7-6 6-3 |