Stadium: Court 6 Round: 28 Ground: Clay
| ITF Japan F6 | 2018/04/13 03:40 | Rimpei Kawakami v Kazuki Nishiwaki | 4-6,2-6 |
| ITF Japan F6 | 2018/04/12 04:20 | Kazuki Nishiwaki v Chuhan Wang | 6-0,7-5 |
| ITF Japan F6 | 2018/04/10 03:10 | Kazuki Nishiwaki v Issei Okamura | 6-2,7-5 |
| ITF Japan F6 Qual | 2018/04/09 02:50 | Kazuki Nishiwaki v Arata Onozawa | 7-5,6-3 |
| ITF Japan F6 Qual | 2018/04/08 04:00 | Rio Noguchi v Kazuki Nishiwaki | 6-2,6-7,0-6 |
| ITF Japan F6 Qual | 2018/04/07 01:00 | Tamaki Yamao v Kazuki Nishiwaki | 6-4,3-6,3-6 |
| ITF Egypt F10 | 2018/03/21 10:00 | Kazuki Nishiwaki v Benjamin Lock | 6-7,4-6 |
| ITF Egypt F10 | 2018/03/19 08:00 | Michel Vernier v Kazuki Nishiwaki | 3-6,2-6 |
| ITF Japan F6 | 2018/04/13 01:00 | Hiroyasu Ehara v Sora Fukuda | 7-6,6-2 |
| ITF Japan F6 | 2018/04/12 01:00 | Hiroyasu Ehara v Yuta Shimizu | 5-7,7-6,6-1 |
| ITF Japan F6 Qual | 2018/04/11 01:00 | Hiroyasu Ehara v Hajime Nakashima | 6-1,6-2 |
| ITF Japan F5 | 2018/04/05 02:00 | Shintaro Imai v Hiroyasu Ehara | 3-6,5-7 |
| ITF Japan F5 | 2018/04/04 01:00 | Takuto Niki v Hiroyasu Ehara | 2-6,6-2,4-6 |
| ITF Japan F5 | 2018/04/02 04:10 | Yuki Matsuo v Hiroyasu Ehara | 2-6,2-6 |
| ITF Japan F4 | 2018/03/30 01:00 | Ryota Tanuma v Hiroyasu Ehara | 6-3,4-6,6-4 |
| ITF Japan F4 | 2018/03/29 01:00 | Makoto Ochi v Hiroyasu Ehara | 6-4,5-7,4-6 |