Junri Namigata defeated Aki Yamasoto 6-0 6-4 in the Makinohara $25K round of 16 on grass. The result followed the form book — Junri Namigata came in leading the head-to-head 3–1. Junri Namigata extended the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-10-19 | Hamamatsu $25K | R32 | grass | Junri Namigata | 6-1 6-4 |
| 2012-08-27 | Tsukuba 25K | R16 | hard | Aki Yamasoto | 3-6 7-5 6-4 |
| 2012-05-21 | Karuizawa 25K | SF | grass | Junri Namigata | 7-6(5) 6-1 |
| 2009-07-27 | Obihiro-Tokachi 25K | R16 | carpet | Junri Namigata | 6-0 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.