Round: 62 Ground: Hardcourt outdoor
| ITF Japan F4 | 2015/03/29 00:00 | Furuta, Ibuki v Fujii, Shinta | 4-6,6-4,6-7 |
| ITF Japan F7 | 2016/06/06 01:00 | 田沼 諒太 v Kai, Naoto | 6-4,6-3 |
| ITF Japan F4 | 2016/03/26 00:00 | 菊池 玄吾 v Kai, Naoto | 6-2,7-6 |
| ITF Japan F1 | 2016/03/05 03:00 | Kai, Naoto v 河内 一真 | 6-4,3-6,4-6 |
| ITF Japan F7 Qual | 2015/06/13 00:00 | Kai, Naoto v Numajiri, Keisuke | 2-6,3-6 |