Stadium: Court 3 Round: 44 Ground: Hardcourt outdoor
| ITF China F2 | 2018/01/18 02:30 | Issei Okamura v Goran Markovic | 6-2,0-6,5-7 |
| ITF China F2 | 2018/01/16 03:40 | Hu Liu v Issei Okamura | 7-5,4-6,2-6 |
| ITF China F1 | 2018/01/11 02:30 | Ryota Tanuma v Issei Okamura | 6-1,6-2 |
| ITF China F1 | 2018/01/09 04:50 | Issei Okamura v Lingxi Zhao | 3-6,6-3,6-4 |
| ITF Vietnam F3 | 2017/11/25 03:00 | Issei Okamura v Arjun Kadhe | 1-6,1-6 |
| ITF Vietnam F3 | 2017/11/24 03:00 | Rio Noguchi v Issei Okamura | 2-6,2-6 |
| ITF Vietnam F3 | 2017/11/22 03:00 | Michael Look v Issei Okamura | 6-7,2-6 |
| ITF Vietnam F3 | 2017/11/21 04:30 | Issei Okamura v Yan Sabanin | 6-4,6-1 |
| ITF Vietnam F3 | 2017/11/23 03:00 | Arjun Kadhe v Arata Onozawa | 7-5,6-2 |
| ITF Vietnam F3 | 2017/11/21 03:00 | Arata Onozawa v Shunrou Takeshima | 6-0,6-3 |
| ITF Vietnam F3 | 2017/11/20 03:00 | Mislav Bosnjak v Arata Onozawa | 0-6,2-6 |
| ITF Vietnam F3 | 2017/11/19 07:00 | Huynh Thinh v Arata Onozawa | 2-6,0-6 |
| ITF Vietnam F1 | 2017/11/04 05:00 | Chanchai Sookton-Eng v Arata Onozawa | 5-7,3-6 |
| ITF Thailand F6 Qual | 2017/08/13 05:00 | Arata Onozawa v Chayanon Kaewsuto | 6-4,4-6,3-6 |
| ITF Thailand F5 | 2017/08/08 09:50 | Nam Hoang Ly v Arata Onozawa | 5-7,6-2,7-6 |
| ITF Thailand F5 Qual | 2017/08/07 05:35 | Masaki Sasai v Arata Onozawa | 6-7,1-6 |