Stadium: Court 4 Round: 25 Ground: Hardcourt outdoor
| ITF Japan F8 | 2018/06/14 03:00 | Rimpei Kawakami v Kazuma Kawachi | 6-1,2-6,7-6 |
| ITF Japan F8 | 2018/06/12 01:00 | Masayoshi Ono v Kazuma Kawachi | 4-6,0-6 |
| ITF Japan F7 | 2018/06/05 01:00 | Yuki Mochizuki v Kazuma Kawachi | 6-1,6-2 |
| ITF China F7 | 2018/05/29 03:20 | Aoran Wang v Kazuma Kawachi | 6-2,6-1 |
| ITF Nigeria F3 | 2018/05/01 09:00 | Kazuma Kawachi v Karim-Mohamed Maamoun | 4-6,2-6 |
| ITF Nigeria F3 Qual | 2018/04/29 09:00 | Kazuma Kawachi v Rishabdev Raman | 6-1,7-5 |
| ITF Nigeria F2 Qual | 2018/04/22 10:25 | Kazuma Kawachi v Alexandru Danes | 6-3,3-6,1-6 |
| ITF Nigeria F2 Qual | 2018/04/21 09:00 | Kazuma Kawachi v Dustin Goldenberg | 1-6,6-1,6-0 |
| ITF Japan F7 | 2018/06/04 01:00 | Yuichiro Inui v Tomohiro Masabayashi | 5-7,3-6 |
| 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 |