Round: 62 Ground: Hardcourt outdoor
| ITF Japan F4 | 2016/03/26 00:00 | Tanuma, Ryota v Wei-De Lin | 6-3,6-3 |
| ITF Japan F3 | 2016/03/22 03:30 | Tanuma, Ryota v Sekiguchi, Shuichi | 6-4,1-6,2-6 |
| ITF Japan F3 | 2016/03/20 01:00 | Yu, Cheng-Yu v Tanuma, Ryota | 6-3,7-5 |
| ITF Japan F3 | 2016/03/19 03:45 | Tung-Lin Wu v Tanuma, Ryota | 4-6,2-6 |
| ITF Japan F2 | 2016/03/12 00:30 | Tanuma, Ryota v Takeshima, Shunrou | 3-6,0-6 |
| ITF Japan F1 | 2016/03/10 02:40 | Tanuma, Ryota v Kibi, Yuya | 4-6,3-6 |
| ITF USA F5 | 2016/01/27 19:00 | Arvidsson, Isak v Tanuma, Ryota | 6-3,7-5 |
| ITF USA F4 | 2016/01/17 18:00 | Tanuma, Ryota v Oliver Crawford | 1-6,4-6 |
| ITF Japan F4 | 2016/03/26 00:00 | Kato, Shoma v Kazuma Kawachi | 2-6,4-6 |
| ITF Japan F3 | 2016/03/19 03:45 | Kazuma Kawachi v Zheng, Weiqiang | 4-6,1-6 |
| ITF Japan F1 | 2016/03/07 01:00 | Watanuki, Keisuke v Kazuma Kawachi | 6-1,6-1 |
| ITF Japan F1 | 2016/03/06 03:00 | Kazuma Kawachi v Ren Nakamura | 3-6,6-4,6-2 |
| ITF Japan F1 | 2016/03/05 03:00 | Kai, Naoto v Kazuma Kawachi | 6-4,3-6,4-6 |
| ITF Thailand F9 | 2015/12/02 07:35 | Navasirisomboon, Jirat v Kazuma Kawachi | 6-4,6-7,6-2 |
| ITF Thailand F9 | 2015/11/29 05:50 | Kazuma Kawachi v Klaoklang, Marut | 6-2,6-1 |
| ITF Thailand F9 | 2015/11/28 06:30 | Kazuma Kawachi v Heyer, Gianandrea | 6-2,6-1 |