Riko Sawayanagi advanced when Miyu Kato retired 6-3 4-0 in the Tokyo qualifying round 1. Riko Sawayanagi extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-04-17 | Zhengzhou | R32 | hard | Riko Sawayanagi | 7-6(4) 6-0 |
Averages from each player's recent completed matches (15 vs 20). ATP, WTA & Challenger.