Round: 25 Ground: Hardcourt outdoor
| ITF Japan F8 | 2015/06/28 01:00 | Yasutaka Uchiyama v Katayama, Sho | 6-2,6-3 |
| ITF Japan F8 | 2015/06/27 01:00 | Katayama, Sho v Renta Tokuda | 1-6,7-5,6-2 |
| ITF Japan F8 | 2015/06/26 01:00 | Katayama, Sho v Takeshima, Shunrou | 3-6,6-0,6-3 |
| ITF Japan F8 | 2015/06/25 01:00 | Katayama, Sho v Sasai, Masaki | 6-3,6-1 |
| ITF Japan F8 | 2015/06/24 01:10 | Oku, Hiromasa v Katayama, Sho | 6-7,0-6 |
| ITF Japan F6 | 2015/06/10 02:20 | Katayama, Sho v Toshihide Matsui | 7-5,3-6,4-6 |
| ITF Guam F1 | 2015/05/29 05:10 | Ko Suzuki v Katayama, Sho | 6-3,4-6,6-2 |
| ITF Guam F1 | 2015/05/28 00:00 | Thomas Fancutt v Katayama, Sho | 6-3,2-6,4-6 |
| ITF China F11 | 2015/07/21 02:00 | Fajing Sun v Tanuma, Ryota | 6-3,4-6,4-6 |
| ITF China F10 | 2015/07/14 02:00 | Fajing Sun v Zhang, Ze | 1-6,5-7 |
| ITF China F9 | 2015/07/02 02:00 | Zhe Li v Fajing Sun | 6-3,6-1 |
| ITF China F9 | 2015/06/30 09:35 | Zhu, Zhicheng v Fajing Sun | 3-6,4-6 |
| ITF China F8 | 2015/06/23 04:45 | Gao, Xin v Fajing Sun | 6-1,6-3 |
| ITF China F6 | 2015/06/02 02:00 | Kuan-Yi Lee v Fajing Sun | 6-3,6-2 |
| ITF China F6 | 2015/05/28 02:00 | Zhe Li v Fajing Sun | 6-3,6-1 |
| ITF China F6 | 2015/05/19 02:00 | Fajing Sun v Zhe Li | 1-6,2-6 |