Arata Onozawa defeated Ken Onishi 6-3 6-4 in the Toyota CH qualifying round 1 on hard. Arata Onozawa extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-06-06 | Japan F7 | R32 | hard | Arata Onozawa | 6-4 6-7(3) 6-0 |
| 2015-03-09 | Japan F1 | R16 | hard | Ken Onishi | 6-3 1-6 7-5 |
Averages over each player's completed matches in the selected window (39 vs 49). 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