N. Ciavarella defeated Dusan Obradovic 6-2 6-3 in the M15 Kursumlijska Banja 1 round of 16 on clay. The upset overturned the form book — Dusan Obradovic came in ranked #477, leading the head-to-head 1–0. N. Ciavarella claimed a first win over Dusan Obradovic in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-06-24 | M15 Zagreb 1 | R32 | clay | Dusan Obradovic | 3-6 7-5 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.