Round: 26 Ground: Hardcourt outdoor
| 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 |
| ITF China F7 | 2017/05/17 03:40 | Dayne Kelly v Masaki Osafune | 6-1,6-1 |
| ITF China F7 | 2017/05/16 05:30 | Jui-Chen Hung v Masaki Osafune | 2-6,6-1,2-6 |
| ITF China F7 Qual | 2017/05/15 03:55 | Chukang Wang v Masaki Osafune | 7-5,4-6,1-6 |
| ITF China F7 Qual | 2017/05/14 02:55 | Masaki Osafune v Calum Puttergill | 7-5,6-1 |
| ITF Guam F1 | 2017/06/19 02:30 | Jesse Delaney v Yuichi Ito | 4-6,3-6 |
| ITF Singapore F3 | 2017/06/09 02:00 | Nam Hoang Ly v Yuichi Ito | 6-1,6-1 |
| ITF Singapore F3 | 2017/06/08 02:00 | Soichiro Moritani v Yuichi Ito | 6-7,6-7 |
| ITF Singapore F3 | 2017/06/06 02:00 | David Nguyen v Yuichi Ito | 6-7,2-6 |
| ITF Singapore F2 | 2017/05/31 03:00 | Yuichi Ito v Dane Propoggia | 4-6,4-6 |
| ITF Singapore F1 | 2017/05/26 02:00 | Yuichi Ito v Kento Takeuchi | 2-6,3-6 |
| ITF Singapore F1 | 2017/05/25 03:20 | Ken Onoda v Yuichi Ito | 3-6,6-3,1-6 |
| ITF China F7 | 2017/05/16 03:50 | Yuichi Ito v Jie Cui | 4-6,3-6 |