Makoto Ochi defeated Hiroyasu Ehara 6-4 6-3 in the Korea F4 round of 16 on hard. The upset overturned the form book — Hiroyasu Ehara came in leading the head-to-head 1–0, but Makoto Ochi had been the form player, winning 3 of their last 6 on hard. Makoto Ochi claimed a first win over Hiroyasu Ehara in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-03-26 | Japan F4 | R16 | hard | Hiroyasu Ehara | 4-6 7-5 6-4 |
Averages over each player's completed matches in the selected window (200 vs 29). 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