Kokoro Isomura defeated Jea Moon Lee 7-5 6-4 in the Seoul CH qualifying round 1 on hard. The upset overturned the form book — Jea Moon Lee came in leading the head-to-head 3–0, defending last year's round of 32. Kokoro Isomura claimed a first win over Jea Moon Lee in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-07-12 | M15 Tokyo 2 | QF | hard | Jea Moon Lee | 6-2 6-4 |
| 2023-07-19 | M15 Nakhon Si Thammarat 5 | R32 | hard | Jea Moon Lee | 6-3 6-4 |
| 2023-01-19 | M15 Jakarta 1 | R16 | hard | Jea Moon Lee | 6-1 6-1 |
Averages over each player's completed matches in the selected window (136 vs 47). ATP, WTA & Challenger.
Isomura K.: 8 days rest · 3 matches (14d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About