Round: 62 Ground: Hardcourt outdoor
| ITF Japan F3 | 2018/03/17 00:30 | Tagata, Ryohei v Takuya Kumasaka | 6-0,6-2 |
| ITF Japan F1 | 2018/03/08 07:20 | Takuya Kumasaka v Wishaya Trongcharoenchaikul | 6-1,0-6,3-6 |
| ITF Japan F1 | 2018/03/07 03:10 | Takuya Kumasaka v Milan Drinic | 6-1,6-1 |
| ITF Japan F4 | 2017/03/25 01:00 | Taisei Miyamoto v Takuya Kumasaka | 6-2,6-3 |
| ITF Japan F3 | 2017/03/18 05:00 | Masamichi Imamura v Takuya Kumasaka | 7-6,7-5 |
| ITF Japan F1 | 2017/03/04 03:30 | Takuya Kumasaka v Shirafuji, Naru | 2-6,2-6 |
| ITF Japan F3 | 2018/03/18 01:30 | Issei Okamura v Sasai, Masaki | 6-3,6-1 |
| ITF Japan F3 | 2018/03/17 04:00 | Tagata, Ryohei v Sasai, Masaki | 5-7,6-3,2-6 |
| ITF Japan F2 | 2018/03/12 00:30 | Murray, Jack v Sasai, Masaki | 6-4,6-3 |
| ITF Japan F1 | 2018/03/07 01:00 | Sasai, Masaki v Yuta Shimizu | 5-7,6-7 |
| ITF Japan F1 | 2018/03/06 01:00 | Sho Shimabukuro v Sasai, Masaki | 6-7,3-6 |
| ITF Japan F1 | 2018/03/04 03:00 | Numajiri, Keisuke v Sasai, Masaki | 1-6,6-3,0-6 |
| ITF Japan F1 | 2018/03/03 05:30 | Shimizu, Kazuki v Sasai, Masaki | 3-6,2-6 |
| Challenger Toyota Qual | 2017/11/11 02:15 | Yi, Chu-Huan v Sasai, Masaki | 4-6,6-3,6-4 |