Young Ja Choi defeated Haruka Inoue 4-0 4-1 2-4 4-2 in the Seoul 50K round of 32 on hard. The upset overturned the form book — Haruka Inoue came in leading the head-to-head 2–0. Young Ja Choi claimed a first win over Haruka Inoue in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-07-21 | Changwon 25K | QF | hard | Haruka Inoue | 6-4 6-3 |
| 1999-12-06 | Manila 25K | R32 | hard | Haruka Inoue | 6-3 6-2 |