Gengo Kikuchi defeated Pak Long Yeung 4-6 7-5 6-2 in the Vietnam F2 round of 32 on hard. The result followed the form book — Gengo Kikuchi came in leading the head-to-head 1–0. Gengo Kikuchi extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-03-10 | M15 Nishi-Tokyo 1 | Q32 | hard | Gengo Kikuchi | 6-4 6-2 |