Round: 25 Ground: Hardcourt outdoor
| ITF Japan F8 | 2015/06/27 01:00 | Yasutaka Uchiyama v Katsuki Nagao | 7-6,6-3 |
| ITF Japan F8 | 2015/06/25 04:25 | Hiroyasu Ehara v Katsuki Nagao | 4-6,3-6 |
| ITF Japan F8 | 2015/06/24 01:10 | Katsuki Nagao v Masaki Osafune | 6-3,6-0 |
| ITF Japan F7 | 2015/06/18 02:00 | Ryota Tanuma v Katsuki Nagao | 6-3,6-1 |
| ITF Japan F7 | 2015/06/17 01:00 | Shunrou Takeshima v Katsuki Nagao | 6-7,3-6 |
| ITF Japan F6 | 2015/06/10 01:30 | Yosuke Watanuki v Katsuki Nagao | 7-6,6-7,6-4 |
| ITF Japan F5 | 2015/06/02 01:00 | Ben Mclachlan v Katsuki Nagao | 6-1,6-2 |
| ITF Guam F1 | 2015/05/30 02:20 | Takao Suzuki v Katsuki Nagao | 2-6,6-4,6-2 |
| ITF USA F4 | 2016/01/18 16:00 | Isak Arvidsson v Fernando Yamacita | 6-1,6-3 |
| ITF USA F4 | 2016/01/17 16:00 | Fernando Yamacita v Joel Vincent Link | 6-4,6-4 |
| ITF USA F3 | 2016/01/13 16:00 | Kaichi Uchida v Fernando Yamacita | 7-5,6-0 |
| ITF USA F3 Qual | 2016/01/10 16:00 | Fernando Yamacita v Bernardo Saraiva | 6-4,6-3 |
| ITF USA F3 Qual | 2016/01/09 19:00 | McClain Kessler v Fernando Yamacita | 1-6,6-2,1-6 |
| ITF Brazil F9 | 2015/11/17 21:15 | Ricardo Hocevar v Fernando Yamacita | 6-2,6-3 |
| ITF Brazil F7 | 2015/11/01 16:30 | Fernando Yamacita v Gustavo De O Cruz | 4-6,4-6 |
| ITF Brazil F6 | 2015/10/27 14:00 | Fernando Yamacita v Thales Turini | 6-4,3-6,0-6 |