Round: 62 Ground: Clay
| ITF Japan F5 | 2016/04/03 02:00 | Taiki Hashimoto v Yohei Otsuka | 6-0,6-1 |
| ITF Japan F3 | 2016/03/19 00:30 | Tung-Lin Wu v Yohei Otsuka | 6-1,6-3 |
| ITF Japan F1 | 2016/03/05 01:00 | Yohei Otsuka v Soichiro Moritani | 3-6,3-6 |
| ITF Japan F6 Qual | 2015/06/07 01:00 | Makoto Ochi v Yohei Otsuka | 3-6,6-0,6-1 |
| ITF Japan F4 | 2015/03/28 00:30 | Ryota Tanuma v Yohei Otsuka | 6-4,6-1 |
| ITF China F9 Qual | 2016/05/28 02:00 | Xinyu Mao v Takahiro Kubo | 6-4,7-5 |
| ITF Guam F1 | 2016/05/22 01:00 | Shunrou Takeshima v Takahiro Kubo | 6-1,6-1 |
| ITF Australia F1 Qual | 2016/02/19 22:30 | Takahiro Kubo v Alexander Crnokrak | 3-6,1-6 |
| ITF Australia F10 | 2015/11/14 02:00 | David Barclay v Takahiro Kubo | 6-0,6-0 |
| ITF Australia F10 Qual | 2015/11/06 23:30 | Glen Dawes v Takahiro Kubo | 6-0,6-1 |