Stadium: Court 5 Round: 25 Ground: Clay
| ITF China F5 Qual | 2018/05/05 06:00 | Naru Shirafuji v Jianhui Li | 1-6,4-6 |
| ITF China F4 | 2018/05/01 02:40 | Xin Gao v Naru Shirafuji | 7-5,6-4 |
| ITF Japan F4 | 2018/03/24 00:00 | Teppei Uesugi v Naru Shirafuji | 6-2,6-3 |
| ITF Japan F3 | 2018/03/17 04:00 | Rimpei Kawakami v Naru Shirafuji | 6-3,6-2 |
| ITF Japan F2 | 2018/03/12 00:30 | Jumpei Yamasaki v Naru Shirafuji | 6-0,6-0 |
| ITF Japan F1 | 2018/03/07 03:15 | Yuki Mochizuki v Naru Shirafuji | 6-4,6-3 |
| ITF Japan F1 | 2018/03/06 01:00 | Naru Shirafuji v Masaki Osafune | 6-0,6-3 |
| ITF Japan F1 | 2018/03/04 01:00 | Naru Shirafuji v Ryuhei Azuma | 6-2,6-2 |
| ITF Japan F8 | 2018/06/11 00:00 | Yunosuke Tanaka v Tomohiro Masabayashi | 6-1,3-6,6-2 |
| ITF Japan F8 | 2018/06/09 06:40 | Yunosuke Tanaka v James Trotter | 7-6,6-4 |
| ITF Japan F7 Qual | 2018/06/02 01:00 | Yunosuke Tanaka v Takuya Kaneko | 4-6,5-7 |
| ITF Japan F4 | 2018/03/24 00:00 | Yunosuke Tanaka v Shinta Fujii | 6-4,2-6,6-7 |
| ITF Japan F3 | 2018/03/17 00:30 | Yuta Kawahashi v Yunosuke Tanaka | 6-3,6-1 |
| ITF Japan F2 | 2018/03/15 01:00 | Yunosuke Tanaka v Seong Chan Hong | 3-6,3-6 |
| ITF Japan F2 | 2018/03/13 04:00 | Yunosuke Tanaka v Yuto Sakai | 6-4,4-6,7-6 |
| ITF Japan F1 | 2018/03/04 01:00 | Sota Fujii v Yunosuke Tanaka | 7-6,3-6,6-2 |