Sora Fukuda defeated Gengo Kikuchi 4-6 6-4 6-0 in the M15 Karuizawa 1 quarter-final on clay. The result followed the form book — Sora Fukuda came in leading the head-to-head 2–1. Sora Fukuda extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-06-05 | Japan F7 | R32 | hard | Sora Fukuda | 6-2 6-2 |
| 2016-08-22 | Korea F6 | R32 | clay | Sora Fukuda | 4-6 7-6(1) 7-5 |
| 2016-03-14 | Japan F2 | R16 | hard | Gengo Kikuchi | 7-5 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.