Jin Hee Kim defeated Aiko Nakamura 7-6 6-1 in the Kofu 10K round of 16 on clay. The upset overturned the form book — Aiko Nakamura came in leading the head-to-head 2–0. Jin Hee Kim claimed a first win over Aiko Nakamura in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-10-18 | Haibara 25K | QF | carpet | Aiko Nakamura | 4-6 6-2 6-2 |
| 2002-10-14 | Haibara 25K | SF | carpet | Aiko Nakamura | 6-0 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.