Ground: Hardcourt outdoor
| ITF Guam F1 | 2015/05/29 00:00 | Oku, Hiromasa v Suzuki, Takao | 6-4,6-7,5-7 |
| ITF Guam F1 | 2015/05/27 00:00 | Suzuki, Takao v Mclachlan, Ben | 3-6,6-3,6-2 |
| ITF Chinese Taipei F1 Qual | 2014/08/17 02:00 | Suzuki, Takao v 우, 퉁린 | 4-6,3-6 |
| ITF Hong Kong F3 | 2014/07/21 02:00 | 코벨트, 피터 v Suzuki, Takao | 6-3,6-2 |
| ITF Japan F8 | 2014/06/26 01:00 | Suzuki, Takao v 카타야마, 쇼 | 5-7,0-6 |
| ITF Japan F8 | 2014/06/24 04:10 | 이토, 유이치 v Suzuki, Takao | 3-6,2-6 |
| ITF Japan F6 | 2014/06/13 00:00 | Suzuki, Takao v 카타야마, 쇼 | 7-6,2-6,7-6 |
| ITF Japan F6 | 2014/06/11 02:05 | Shiga, Masato v Suzuki, Takao | 1-6,2-6 |
| ITF Guam F1 | 2015/05/29 01:40 | Nagao, Katsuki v Moore, B. | 2-6,6-4,6-2 |
| ITF Guam F1 | 2015/05/25 01:00 | Nagao, Katsuki v Sadler, Olly | 6-4,6-4 |
| ITF Thailand F9 | 2015/04/25 04:00 | Nagao, Katsuki v Itzstein, Zach | 5-7,3-6 |
| ITF Thailand F9 | 2015/04/20 04:00 | Nagao, Katsuki v 타케시마, 순로우 | 4-6,5-7 |
| ITF Thailand F9 | 2015/04/19 03:00 | Nagao, Katsuki v 라티와타나, 손채트 | 6-3,6-3 |
| ITF Thailand F9 | 2015/04/18 04:00 | Nagao, Katsuki v Nalamphun, Jatuporn | 6-0,6-2 |
| ITF Japan F3 | 2015/03/22 01:00 | Nakamura, Yuki v Nagao, Katsuki | 7-6,6-0 |
| ITF Japan F2 | 2015/03/18 02:55 | 이, 덕희 v Nagao, Katsuki | 6-3,7-5 |