Makoto Ochi defeated Duck Hee Lee 6-2 6-1 in the Gwangju CH quarter-final on hard. The upset overturned the form book — Duck Hee Lee came in ranked #977, defending last year's quarter-final. Makoto Ochi extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-06-15 | M25 Changwon 1 | R16 | hard | Makoto Ochi | 6-0 4-6 6-2 |
| 2023-04-19 | M25 Jakarta 2 | R32 | hard | Duck Hee Lee | 6-1 6-3 |
Averages over each player's completed matches in the selected window (200 vs 200). 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