Duck Hee Lee advanced when Jumpei Yamasaki retired 6-0 1-0 in the M25 Changwon 1 round of 32. Duck Hee Lee extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-12-30 | M15 Yanagawa 2 | SF | hard | Duck Hee Lee | 6-1 3-6 6-1 |
| 2023-06-06 | M25 Daegu 1 | R32 | hard | Jumpei Yamasaki | 6-1 4-6 6-4 |
Averages over each player's completed matches in the selected window (120 vs 80). 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