Yunseong Chung defeated Tae Woo Lee 6-2 6-7 6-1 in the Korea F2 round of 32 on hard. The upset overturned the form book — Tae Woo Lee came in leading the head-to-head 1–0, but Yunseong Chung had been the form player, winning 6 of their last 7 on hard. Yunseong Chung claimed a first win over Tae Woo Lee in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-06-26 | Korea F5 | R16 | clay | Tae Woo Lee | 7-5 7-6(3) |
Averages over each player's completed matches in the selected window (200 vs 33). 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