Round: 54 Ground: Clay
| ITF USA F32 Qual | 2015/11/07 14:00 | Niclas Braun v Conor Berg | 6-1,6-3 |
| ITF USA F27 Qual | 2015/09/18 15:30 | Conor Berg v Junior Alexander Ore | 6-7,2-6 |
| ITF Turkey F41 | 2015/10/13 07:00 | Marek Semjan v Masaki Osafune | 7-6,2-6,7-6 |
| ITF Turkey F36 | 2015/10/05 07:00 | Yuanfeng Li v Masaki Osafune | 7-5,6-0 |
| ITF Turkey F36 | 2015/10/04 12:00 | Masaki Osafune v Victor-Mugurel Anagnastopol | 7-5,6-0 |
| ITF China F11 Qual | 2015/07/20 02:00 | Kittiphong Wachiramanowong v Masaki Osafune | 6-0,6-1 |
| ITF China F11 Qual | 2015/07/19 02:00 | Masaki Osafune v Long Chen | 6-4,4-6,7-6 |
| ITF China F10 Qual | 2015/07/12 02:00 | Jun Nan Tao v Masaki Osafune | 4-6,6-1,6-2 |
| ITF China F10 Qual | 2015/07/11 04:00 | Masaki Osafune v Hao Fan Wang | 6-3,6-1 |
| ITF Japan F8 | 2015/06/24 01:10 | Katsuki Nagao v Masaki Osafune | 6-3,6-0 |