Hirono Watanabe defeated Akiko Omae 6-2 6-4 in the Noto 25K round of 32 on carpet. The upset overturned the form book — Akiko Omae came in leading the head-to-head 1–0. Hirono Watanabe claimed a first win over Akiko Omae in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-05-25 | Balikpapan $25K | QF | hard | Akiko Omae | 7-6(7) 2-6 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.