Takashi Saito defeated Soichiro Moritani 6-2 4-6 6-0 in the M15 Jakarta 1 quarter-final on hard. The result followed the form book — Takashi Saito came in leading the head-to-head 1–0. Takashi Saito extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-05-07 | Vietnam F2 | R32 | hard | Takashi Saito | 7-6(7) 3-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.