Chihiro Takayama defeated Sakiko Shimizu 6-4 6-3 in the Tsukuba 25K qualifying round of 32 on hard. Chihiro Takayama extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-09-05 | Noto 25K | Q16 | carpet | Chihiro Takayama | 6-7(4) 6-3 4-1 |
| 2007-10-29 | Kofu 10K | R16 | hard | Sakiko Shimizu | 6-2 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.