Riko Sawayanagi defeated Shuko Aoyama 2-6 6-3 6-4 in the Karuizawa 25K round of 32 on carpet. The result followed the form book — Riko Sawayanagi came in leading the head-to-head 2–1. Riko Sawayanagi extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-10-12 | Makinohara $25K | SF | grass | Riko Sawayanagi | 6-0 6-2 |
| 2014-10-20 | Hamamatsu 25K | SF | carpet | Riko Sawayanagi | 6-4 6-2 |
| 2012-10-22 | Hamamatsu 25K | QF | grass | Shuko Aoyama | 2-6 6-3 6-0 |
Averages over each player's completed matches in the selected window (86 vs 75). 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