Stadium: Court 8 Round: 25 Ground: Synthetic outdoor
| ITF Japan F7 Qual | 2018/06/03 01:00 | Yuichiro Inui v Masayoshi Ono | 7-5,6-2 |
| ITF Singapore F2 | 2018/05/19 03:00 | Yuichiro Inui v Skyler Butts | 6-2,6-7,1-6 |
| ITF Singapore F1 | 2018/05/15 05:15 | Shunrou Takeshima v Yuichiro Inui | 6-4,6-4 |
| ITF Singapore F1 | 2018/05/13 06:00 | Yuichiro Inui v Bang Shuo Yin | 7-5,6-1 |
| ITF Vietnam F2 | 2018/05/05 03:00 | Gengo Kikuchi v Yuichiro Inui | 6-4,6-4 |
| ITF Vietnam F1 | 2018/04/29 05:30 | Darren Polkinghorne v Yuichiro Inui | 6-3,6-3 |
| ITF Japan F6 Qual | 2018/04/07 01:00 | David Barclay v Yuichiro Inui | 1-6,7-6,6-4 |
| ITF Japan F5 | 2018/03/31 00:30 | Yuichiro Inui v Shao-Fan Liu | 0-6,4-6 |
| ITF Japan F7 Qual | 2018/06/03 03:10 | Tomohiro Masabayashi v Ko Suzuki | 5-7,7-6,6-4 |
| ITF Japan F7 Qual | 2018/06/02 03:00 | Tomohiro Masabayashi v Kenta Kurita | 6-2,6-3 |
| ITF Japan F5 | 2018/03/31 00:30 | Rio Noguchi v Tomohiro Masabayashi | 4-6,6-1,7-5 |
| ITF Japan F4 | 2018/03/25 01:00 | Tomohiro Masabayashi v Jack Murray | 6-7,0-6 |
| ITF Japan F4 | 2018/03/24 04:00 | Shunsuke Wakita v Tomohiro Masabayashi | 2-6,5-7 |
| ITF Japan F3 | 2018/03/17 00:30 | Tomohiro Masabayashi v Rimpei Kawakami | 2-6,4-6 |
| ITF Japan F2 | 2018/03/12 00:30 | Tamaki Yamao v Tomohiro Masabayashi | 6-3,4-6,6-1 |
| ITF Japan F2 | 2018/03/11 00:30 | Tomohiro Masabayashi v Ibuki Furuta | 6-3,4-6,6-2 |