Yunseong Chung defeated Duck Hee Lee 6-2 6-0 in the Kobe CH qualifying round 1 on hard. The upset overturned the form book — Duck Hee Lee came in ranked #977, leading the head-to-head 2–0, but Yunseong Chung had been the form player, winning 8 of their last 10 on hard. Yunseong Chung claimed a first win over Duck Hee Lee in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-03-22 | M15 Nishi-Tokyo 1 | QF | hard | Duck Hee Lee | 6-4 6-0 |
| 2013-05-06 | Korea F2 | R32 | hard | Duck Hee Lee | 6-2 6-0 |
Averages over each player's completed matches in the selected window (140 vs 161). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About