Arata Onozawa defeated Makoto Ochi 6-3 6-3 in the Thailand F3 round of 32 on hard. The upset overturned the form book — Makoto Ochi came in leading the head-to-head 5–0. Arata Onozawa claimed a first win over Makoto Ochi in six meetings, narrowing the head-to-head to 5–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-08-29 | Korea F7 | QF | clay | Makoto Ochi | 6-2 6-2 |
| 2016-08-22 | Korea F6 | R16 | clay | Makoto Ochi | 6-3 6-2 |
| 2016-05-30 | Japan F6 | R32 | clay | Makoto Ochi | 6-2 6-3 |
| 2015-10-05 | Philippines F1 | QF | clay | Makoto Ochi | 6-4 6-3 |
| 2015-06-01 | Japan F5 | R32 | clay | Makoto Ochi | 3-6 6-2 6-4 |
Averages over each player's completed matches in the selected window (41 vs 200). 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