Round: 25 Ground: Hardcourt outdoor
| ITF Japan F4 | 2016/03/27 01:00 | Katsuki Nagao v Masaki Osafune | 6-1,6-2 |
| ITF Dominican Republic F2 | 2015/12/06 14:00 | Juan Carlos Aguilar v Masaki Osafune | 7-5,6-3 |
| ITF Dominican Republic F2 | 2015/12/05 13:30 | Mitchell Thomas McDaniels v Masaki Osafune | 4-6,6-7 |
| ITF Dominican Republic F1 | 2015/11/28 16:00 | Conor Berg v Masaki Osafune | 6-2,3-6,7-6 |
| 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 Guam F1 | 2016/05/24 00:00 | Steven Goh v Sho Katayama | 0-6,4-6 |
| ITF Guam F1 | 2016/05/22 00:00 | Jake Delaney v Steven Goh | 4-6,6-7 |
| ITF Guam F1 | 2016/05/21 00:00 | Steven Goh v Derek Okuhama | 6-0,6-0 |