Round: 25 Ground: Clay
| ITF Japan F4 | 2017/03/28 03:00 | Kaito Uesugi v Issei Okamura | 6-3,6-3 |
| ITF Japan F3 | 2017/03/22 06:00 | Shane Vinsant v Issei Okamura | 6-2,6-3 |
| ITF Japan F3 | 2017/03/20 02:35 | Daisuke Sumizawa v Issei Okamura | 2-6,2-6 |
| ITF Japan F2 | 2017/03/13 04:00 | Issei Okamura v Nam Hoang Ly | 2-6,2-6 |
| ITF Japan F1 | 2017/03/07 02:30 | Issei Okamura v Yuki Mochizuki | 2-6,4-6 |
| ITF China F3 | 2017/03/01 07:35 | Issei Okamura v Marco Bortolotti | 3-6,5-7 |
| ITF China F2 | 2017/02/23 03:00 | Issei Okamura v Rubin Statham | 1-6,3-6 |
| ITF China F2 | 2017/02/21 02:00 | Caio Silva v Issei Okamura | 1-6,0-6 |
| ITF Japan F5 | 2017/04/02 01:00 | Rio Noguchi v Takao Suzuki | 6-7,7-6,4-6 |
| ITF Japan F5 | 2017/04/01 02:00 | Yuga Tashiro v Takao Suzuki | 1-6,4-6 |
| ITF Japan F2 | 2017/03/13 01:00 | Jeamoon Lee v Takao Suzuki | 6-4,6-0 |
| ITF Guam F1 | 2016/05/25 02:30 | Deiton Baughman v Takao Suzuki | 6-3,6-2 |
| ITF Japan F5 | 2016/04/06 00:30 | Ken Onishi v Takao Suzuki | 6-3,4-6,3-6 |
| ITF Japan F3 | 2016/03/19 03:45 | Takao Suzuki v Brandon Walkin | 6-2,6-2 |
| WTA Kuala Lumpur Qual | 2015/09/27 03:20 | Takao Suzuki v Yasutaka Uchiyama | 2-6,2-6 |
| WTA Kuala Lumpur Qual | 2015/09/26 05:45 | Kelsey Stevenson v Takao Suzuki | 6-2,3-6,2-6 |