Stadium: Court 4 Round: 44 Ground: Hardcourt outdoor
| ITF Japan F3 | 2018/03/17 00:30 | タガタ,リョウヘイ v 熊坂 拓哉 | 6-0,6-2 |
| ITF Japan F4 | 2017/03/25 01:00 | Nagao, Katsuki v タガタ,リョウヘイ | 2-6,6-2,6-0 |
| ITF Japan F3 | 2017/03/18 05:00 | タガタ,リョウヘイ v Nagao, Katsuki | 3-6,3-6 |
| ITF Japan F1 | 2017/03/04 01:00 | タガタ,リョウヘイ v Uesugi, Teppei | 6-1,1-6,3-6 |
| 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 清水 悠太 | 5-7,6-7 |
| ITF Japan F1 | 2018/03/06 01:00 | 島袋 将 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 | シミズ,カズキ 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 |
| ITF Thailand F8 Qual | 2017/10/08 06:20 | Sasai, Masaki v ラリーア,クレメント | 3-6,3-6 |
| ITF Thailand F8 Qual | 2017/10/07 03:00 | Sasai, Masaki v Wang, Yu-Chang | 6-0,6-2 |