Aya Tanaka defeated Yumi Nakano 6-1 6-1 in the Makinohara $25K q16 on grass. The upset overturned the form book — Yumi Nakano came in leading the head-to-head 1–0. Aya Tanaka claimed a first win over Yumi Nakano in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-10-19 | Hamamatsu $25K | Q16 | grass | Yumi Nakano | 6-2 3-6 7-6(5) |