Kumiko Iijima defeated Chihiro Takayama 6-4 6-4 in the Hamamatsu 25K q32 on grass. The upset overturned the form book — Chihiro Takayama came in leading the head-to-head 1–0. Kumiko Iijima claimed a first win over Chihiro Takayama in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-06-01 | Komoro 25K | R32 | clay | Chihiro Takayama | 7-5 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.