Tomoko Yonemura defeated Junri Namigata 6-3 6-3 in the Fukuoka 50K qualifying round on grass. The upset overturned the form book — Junri Namigata came in leading the head-to-head 3–1. Tomoko Yonemura narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-10-11 | Osaka | R32 | hard | Junri Namigata | 6-2 6-3 |
| 2007-09-10 | Tokyo 50K | R16 | hard | Junri Namigata | 6-2 7-5 |
| 2006-10-30 | Shanghai 50K | R32 | hard | Tomoko Yonemura | 1-6 6-3 6-2 |
| 2004-09-06 | Ibaraki 25K | R32 | hard | Junri Namigata | 3-6 6-2 7-5 |
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