Fnu Nidunjianzan defeated Sungbeen Sim 4-6 6-3 6-2 in the M25 Yinchuan 1 round of 32 on hard. The upset overturned the form book — Sungbeen Sim came in leading the head-to-head 1–0, but Fnu Nidunjianzan had been the form player, winning 7 of their last 10 on hard. Fnu Nidunjianzan claimed a first win over Sungbeen Sim in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-06-25 | M15 Maanshan 3 | R32 | hard | Sungbeen Sim | 6-1 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.