Sihyeong Cho defeated Seo Hyeon Jang 6-2 6-3 in the W15 Yeongwol 1 q64 on hard. Sihyeong Cho extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-08-04 | W15 Singapore 1 | Q16 | hard | Sihyeong Cho | 6-3 6-2 |
| 2024-09-29 | W15 Yeongwol 2 | Q64 | hard | Seo Hyeon Jang | 6-0 1-6 10-6 |
Averages over each player's completed matches in the selected window (28 vs 7). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About