Sungbeen Sim defeated Fnu Nidunjianzan 6-1 6-4 in the M15 Maanshan 3 round of 32 on hard. The upset overturned the form book — Fnu Nidunjianzan came in leading the head-to-head 1–0. Sungbeen Sim claimed a first win over Fnu Nidunjianzan in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-08-14 | M25 Yinchuan 1 | R32 | hard | Fnu Nidunjianzan | 4-6 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.