Yohei Ono defeated Hiromasa Oku 6-2 6-1 in the Japan F5 qualifying round on clay. Yohei Ono extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-06-16 | Japan F7 | SF | carpet | Hiromasa Oku | 6-2 6-4 |
| 2012-06-18 | Japan F6 | R32 | grass | Yohei Ono | 6-2 5-7 7-6(4) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.