Risa Ushijima defeated Midori Yamamoto 6-3 6-2 in the Tokyo 10K q16 on hard. The upset overturned the form book — Midori Yamamoto came in leading the head-to-head 1–0, but Risa Ushijima had been the form player, winning 4 of their last 5 on hard. Risa Ushijima claimed a first win over Midori Yamamoto in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-11-23 | Toyota $75K | Q32 | carpet | Midori Yamamoto | 6-2 3-6 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.