Stadium: Court 13 Round: 27 Ground: Hardcourt outdoor
| ITF Japan F1 | 2015/03/09 00:40 | Shintaro Imai v Issei Okamura | 6-0,6-1 |
| ITF Hong Kong F2 | 2018/07/04 02:00 | Sidharth Rawat v Issei Okamura | 6-0,5-7,2-6 |
| ITF Hong Kong F2 | 2018/07/02 02:00 | Ching Lam v Issei Okamura | 1-6,4-6 |
| ITF Hong Kong F1 | 2018/06/28 02:00 | Hong Kit Wong v Issei Okamura | 7-5,6-4 |
| ITF Hong Kong F1 | 2018/06/25 04:35 | Jeson Patrombon v Issei Okamura | 4-6,2-6 |
| ITF Japan F8 | 2018/06/13 04:40 | Issei Okamura v Rio Noguchi | 4-6,3-6 |
| ITF Japan F7 | 2018/06/05 01:00 | Sora Fukuda v Issei Okamura | 6-3,6-1 |
| ITF China F6 | 2018/05/14 07:00 | Issei Okamura v Shi Hong Zeng | 2-6,3-6 |
| ITF Vietnam F2 | 2018/05/08 04:20 | Issei Okamura v Lucas Vuradin | 6-7,2-6 |
| ITF Hong Kong F2 | 2018/07/04 02:00 | Hei Yin Andrew Li v Shintaro Imai | 2-6,0-6 |
| ITF Hong Kong F2 | 2018/07/02 04:00 | Yuki Mochizuki v Shintaro Imai | 6-4,5-7,3-6 |
| ITF Hong Kong F1 | 2018/06/25 02:00 | Shintaro Imai v Ryota Tanuma | 3-6,2-6 |
| ITF Korea F3 | 2018/06/20 03:15 | Jae Hwan Kim v Shintaro Imai | 6-4,7-6 |
| ITF Korea F3 | 2018/06/19 06:35 | Hong Chung v Shintaro Imai | 6-7,6-3,1-6 |
| ITF Singapore F2 | 2018/05/24 03:00 | Collin Altamirano v Shintaro Imai | 6-2,6-2 |
| ITF Singapore F2 | 2018/05/23 02:00 | Clement Larriere v Shintaro Imai | 2-6,4-6 |
| ITF Singapore F2 | 2018/05/22 02:00 | Hao Yuan Ng v Shintaro Imai | 0-6,0-6 |