| ITF Japan F6 Qual | 06/08 07:30 | - | Masaki Sasai v Atsushi Ushida | 1-6,3-6 | |
| ITF Japan F5 | 06/03 01:00 | - | Takuto Niki v Masaki Sasai | 6-4,6-4 | |
| ITF Guam F1 | 05/27 00:00 | - | Masaki Sasai v Shunrou Takeshima | 4-6,2-6 | |
| ITF Korea F1 Qual | 04/30 01:00 | - | Cheong-Eui Kim v Masaki Sasai | 6-2,6-4 | |
| ITF Korea F1 Qual | 04/29 00:30 | - | Ku Keon Kang v Masaki Sasai | 3-6,2-6 | |
| ITF Korea F1 Qual | 04/21 02:00 | - | Min Hyeok Cho v Masaki Sasai | 6-0,6-2 | |
| ITF Japan F4 | 04/02 02:45 | - | Issei Okamura v Masaki Sasai | 6-3,6-3 | |
| ITF Japan F2 | 03/19 01:00 | - | Gengo Kikuchi v Masaki Sasai | 7-6,7-6 | |
| ITF Japan F2 | 03/17 04:05 | - | Masaki Sasai v Yuichi Ito | 6-3,6-2 |