Ground: Hardcourt outdoor
| ITF Japan F8 | 2015/06/24 01:10 | Katsuki Nagao v Masaki Osafune | 6-3,6-0 |
| ITF Japan F7 Qual | 2015/06/15 00:30 | Koichi Sano v Masaki Osafune | 6-4,6-2 |
| ITF Japan F7 Qual | 2015/06/14 00:00 | Masaki Osafune v Leo Julien Sebaoun | 7-5,6-2 |
| ITF Japan F3 | 2015/03/22 01:00 | Masaki Osafune v Jeamoon Lee | 4-6,3-6 |
| ITF Japan F7 Qual | 2014/06/16 01:00 | Masaki Osafune v Renta Tokuda | 4-6,3-6 |
| ITF Japan F1 | 2014/03/11 02:55 | Arata Onozawa v Masaki Osafune | 4-6,6-1,6-3 |
| ITF China F6 | 2015/05/17 02:00 | Hao Fan Wang v Xi Qi | 1-6,2-6 |