Chia Jung Chuang defeated Shiho Hisamatsu 3-6 6-3 7-5 in the Mount Gambier 25K round of 16 on hard. The upset overturned the form book — Shiho Hisamatsu came in leading the head-to-head 3–0. Chia Jung Chuang claimed a first win over Shiho Hisamatsu in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-07-03 | Nagoya 25K | QF | hard | Shiho Hisamatsu | 6-4 6-4 |
| 2004-05-10 | Karuizawa 25K | R16 | carpet | Shiho Hisamatsu | 6-1 6-2 |
| 2003-06-02 | Seoul 25K | R32 | hard | Shiho Hisamatsu | 6-1 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.