Yunseong Chung defeated Ji Hoon Son 7-6 6-4 in the Korea F3 round of 32 on hard. Yunseong Chung extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-06-05 | Korea F2 | R16 | hard | Ji Hoon Son | 7-6(5) 0-6 7-6(5) |
| 2015-08-17 | Korea F4 | R16 | hard | Yunseong Chung | 6-2 6-3 |
Averages over each player's completed matches in the selected window (200 vs 19). 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