Romeo Hadzimehmedovic defeated Stefan Kostic 6-4 4-6 6-1 in the M15 Kursumlijska Banja 7 round of 32 on clay. The upset overturned the form book — Stefan Kostic came in leading the head-to-head 1–0. Romeo Hadzimehmedovic claimed a first win over Stefan Kostic in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-08-07 | M15 Kursumlijska Banja 14 | R32 | clay | Stefan Kostic | 7-5 6-4 |