Issei Okamura defeated Yuichiro Inui 6-4 6-7 6-3 in the M15 Tanagura 1 quarter-final on hard. Issei Okamura extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-06-08 | Japan F6 | Q16 | hard | Issei Okamura | 6-3 6-1 |
Averages over each player's completed matches in the selected window (51 vs 71). 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