Marko Nikolic defeated Gorazd Srbljak 2-6 6-4 10-6 in the M15 Kursumlijska Banja 1 q128 on clay. The upset overturned the form book — Gorazd Srbljak came in leading the head-to-head 1–0. Marko Nikolic claimed a first win over Gorazd Srbljak in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-07-28 | M15 Kursumlijska Banja 13 | Q32 | clay | Gorazd Srbljak | 7-6(6) 6-7(5) 10-8 |