Tomoko Yonemura defeated Su Wei Hsieh 1-6 7-6 7-5 in the Nagano 25K round of 32 on carpet. The upset overturned the form book — Su Wei Hsieh came in leading the head-to-head 4–0. Tomoko Yonemura claimed a first win over Su Wei Hsieh in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-10-27 | Tokyo 50K | R32 | hard | Su Wei Hsieh | 6-2 6-1 |
| 2008-09-01 | Tsukuba 25K | SF | hard | Su Wei Hsieh | 6-4 6-1 |
| 2005-02-21 | Taipei 25K | R32 | hard | Su Wei Hsieh | 6-0 7-6(4) |
| 2004-04-12 | Ho Chi Minh City 25K | R32 | hard | Su Wei Hsieh | 6-4 6-2 |
Averages over each player's completed matches in the selected window (2 vs 200). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About