I Hsuan Hwang defeated Katie Obrien 3-6 6-4 7-5 in the Port Pirie 25K round of 16 on hard. The upset overturned the form book — Katie Obrien came in leading the head-to-head 1–0. I Hsuan Hwang claimed a first win over Katie Obrien in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-11-19 | Mount Gambier 25K | R32 | hard | Katie Obrien | 4-6 6-2 7-6(2) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.