Unknown Player defeated Simeon Stankovic 7-5 6-4 in the M15 Kursumlijska Banja 13 q64 on clay. The upset overturned the form book — Simeon Stankovic came in leading the head-to-head 2–0. Unknown Player claimed a first win over Simeon Stankovic in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-04-21 | M15 Kursumlijska Banja 1 | Q32 | clay | Simeon Stankovic | 6-1 7-6(4) |
| 2024-09-09 | M15 Kursumlijska Banja 17 | Q32 | clay | Simeon Stankovic | 6-3 6-3 |