Arata Onozawa defeated Keisuke Watanuki 6-3 6-4 in the Japan F8 qualifying round on clay. The result followed the form book — Arata Onozawa came in leading the head-to-head 1–0. Arata Onozawa extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-06-15 | Japan F7 | R32 | carpet | Arata Onozawa | 7-6(4) 0-6 6-3 |
Averages over each player's completed matches in the selected window (46 vs 11). 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