Stadium: Court 5 Round: 26 Ground: Clay
| ITF Japan F8 | 2018/06/13 02:40 | Hikaru Shiraishi v Yuto Sakai | 6-2,6-1 |
| ITF Japan F6 Qual | 2018/04/08 01:00 | Issei Okamura v Hikaru Shiraishi | 6-4,6-3 |
| ITF Japan F7 | 2016/06/07 05:10 | Yuichi Ito v Hikaru Shiraishi | 6-1,6-0 |
| ITF Japan F8 | 2018/06/13 01:00 | Shunrou Takeshima v Ryota Tanuma | 3-6,1-6 |
| ITF Japan F7 | 2018/06/04 01:00 | Ryota Tanuma v Haru Inoue | 5-7,2-6 |
| ITF Vietnam F3 | 2018/05/16 06:45 | Abhinav Sanjeev Shanmugam v Ryota Tanuma | 6-4,6-4 |
| ITF Vietnam F3 | 2018/05/15 03:00 | Phongsapak Kerdlaphee v Ryota Tanuma | 2-6,4-6 |
| ITF Vietnam F2 | 2018/05/11 03:00 | Gengo Kikuchi v Ryota Tanuma | 6-4,6-2 |
| ITF Vietnam F2 | 2018/05/09 03:00 | Linh Giang Trinh v Ryota Tanuma | 6-3,3-6,5-7 |
| ITF Vietnam F2 | 2018/05/07 05:15 | Adrian Andrzejczuk v Ryota Tanuma | 4-6,1-6 |
| ITF Vietnam F1 | 2018/05/02 05:25 | Ryota Tanuma v Lucas Vuradin | 6-7,2-6 |