Shintaro Imai defeated Naoki Tajima 6-1 6-2 in the M15 Tsukuba 1 semi-final on hard. The result followed the form book — Shintaro Imai came in ranked #1077, leading the head-to-head 2–0. Shintaro Imai extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-03-13 | M15 Nishi-Tokyo 1 | R32 | hard | Shintaro Imai | 6-1 6-4 |
| 2018-03-26 | Japan F4 | R16 | hard | Shintaro Imai | 6-4 6-3 |
Averages over each player's completed matches in the selected window (200 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