Stadium: Court B Round: 46
| 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 |
| 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 |
| Challenger Kyoto Qual | 2018/02/17 07:50 | Kaito Itsusaki v Takuto Niki | 4-6,0-6 |
| Challenger Burnie Qual | 2018/01/27 06:00 | Takuto Niki v N. Vijay Sundar Prashanth | 4-6,3-6 |
| Challenger Burnie Qual | 2018/01/27 02:25 | Takuto Niki v Thomas Bosancic | 6-3,6-2 |
| ITF Hong Kong F6 | 2018/01/04 02:00 | Matteo Viola v Takuto Niki | 6-1,6-3 |
| ITF Hong Kong F6 | 2018/01/03 02:00 | Lingxi Zhao v Takuto Niki | 1-6,1-6 |
| ITF Hong Kong F6 | 2018/01/02 03:40 | Skyler Butts v Takuto Niki | 1-6,0-6 |
| ITF Hong Kong F5 | 2017/12/27 04:45 | Alexander Zhurbin v Takuto Niki | 6-4,7-6 |
| ITF Hong Kong F5 | 2017/12/26 03:30 | Takuto Niki v Evan King | 6-4,6-2 |