Stadium: Court B Round: 62 Ground: Hardcourt outdoor
| ITF Japan F1 | 2018/03/04 01:00 | Naru Shirafuji v Ryuhei Azuma | 6-2,6-2 |
| ITF Japan F1 | 2018/03/03 03:00 | Naru Shirafuji v Keigo Shimizu | 6-2,6-1 |
| Challenger Kyoto Qual | 2018/02/17 04:45 | Hiroyasu Ehara v Naru Shirafuji | 7-5,6-2 |
| ITF Egypt F4 | 2018/02/05 09:00 | Naru Shirafuji v Vincent Stouff | 0-6,2-6 |
| ITF Egypt F4 | 2018/02/04 15:00 | Naru Shirafuji v Arsav Mohanty | 6-2,6-3 |
| ITF Egypt F3 | 2018/01/29 08:00 | Daniil Zarichanskiy v Naru Shirafuji | 7-6,6-4 |
| ITF Egypt F3 | 2018/01/28 10:00 | Nicolo Inserra v Naru Shirafuji | 4-6,3-6 |
| ITF Egypt F3 | 2018/01/27 12:00 | Iancu-Iustinian Ghinda v Naru Shirafuji | 3-6,0-6 |
| ITF Japan F1 | 2018/03/03 04:30 | Cheong Hwi Kim v Masaki Osafune | 1-6,1-6 |
| Challenger Kyoto Qual | 2018/02/18 06:05 | Masaki Osafune v Takuto Niki | 3-6,2-6 |
| Challenger Toyota Qual | 2017/11/11 02:15 | Yuto Sakai v Masaki Osafune | 7-6,1-6,6-1 |
| ITF Guam F1 | 2017/06/22 03:25 | Masaki Osafune v Yuichi Ito | 2-6,4-6 |
| ITF Guam F1 | 2017/06/20 06:00 | Masaki Osafune v Steven Goh | 6-3,6-4 |
| ITF Japan F7 | 2017/06/06 04:05 | Renta Tokuda v Masaki Osafune | 6-1,3-6,6-1 |
| ITF Japan F7 | 2017/06/04 01:00 | Masaki Osafune v Shoma Kato | 6-3,6-3 |
| ITF Japan F6 Qual | 2017/05/29 03:40 | Yuki Matsuo v Masaki Osafune | 7-6,6-2 |