Hong Chung defeated Yan Bai 4-6 7-6 6-2 in the Gwangju CH round of 32 on hard. The upset overturned the form book — Yan Bai came in leading the head-to-head 1–0. Hong Chung claimed a first win over Yan Bai in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-12-04 | Thailand F11 | R32 | hard | Yan Bai | 6-2 6-3 |
Averages over each player's completed matches in the selected window (57 vs 199). 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