I Hsuan Hwang defeated Shiho Hisamatsu 6-4 6-2 in the Perth 25K round of 32 on hard. The upset overturned the form book — Shiho Hisamatsu came in leading the head-to-head 4–0. I Hsuan Hwang claimed a first win over Shiho Hisamatsu in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-03-10 | Kalgoorlie 25K | R32 | hard | Shiho Hisamatsu | 7-6(6) 6-4 |
| 2007-09-10 | Tokyo 50K | R16 | hard | Shiho Hisamatsu | 7-6(3) 7-6(10) |
| 2006-09-25 | Tokyo 50K | R32 | hard | Shiho Hisamatsu | 6-2 6-4 |
| 2006-07-03 | Nagoya 25K | R16 | hard | Shiho Hisamatsu | 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.