Riko Sawayanagi defeated Nao Hibino 7-5 6-0 in the Hamamatsu 25K qualifying round on carpet. The upset overturned the form book — Nao Hibino came in leading the head-to-head 3–0. Riko Sawayanagi claimed a first win over Nao Hibino in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-05-11 | Kurume $50K | R32 | grass | Nao Hibino | 6-3 6-2 |
| 2014-05-05 | Fukuoka 50K | R32 | grass | Nao Hibino | 6-3 7-5 |
| 2013-08-26 | Tsukuba 25K | QF | hard | Nao Hibino | 6-2 6-2 |
Averages over each player's completed matches in the selected window (86 vs 200). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About