Shintaro Imai defeated Jumpei Yamasaki 6-4 6-1 in the M15 Osaka 2 semi-final on hard. The result followed the form book — Shintaro Imai came in ranked #856, leading the head-to-head 5–0. Shintaro Imai extended the head-to-head to 6–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-02-24 | M15 Sharm El Sheikh 4 | R32 | hard | Shintaro Imai | 7-6(5) 7-6(1) |
| 2019-03-31 | M15 Tsukuba 1 | F | hard | Shintaro Imai | 6-4 6-4 |
| 2019-03-14 | M15 Nishi-Tokyo 1 | R16 | hard | Shintaro Imai | 3-6 6-3 6-3 |
| 2018-04-02 | Japan F5 | R16 | hard | Shintaro Imai | 6-3 6-4 |
| 2017-06-26 | Hong Kong F2 | QF | hard | Shintaro Imai | 6-4 6-2 |
Averages over each player's completed matches in the selected window (11 vs 5). 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