Arata Onozawa defeated Ken Onishi 6-4 6-7 6-0 in the Japan F7 round of 32 on hard. The upset overturned the form book — Ken Onishi came in leading the head-to-head 1–0. Arata Onozawa claimed a first win over Ken Onishi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 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