Round: 26 Ground: Hardcourt outdoor
| ITF China F12 | 2015/08/03 08:00 | Katayama, Sho v Fajing Sun | 6-4,6-4 |
| 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 China F12 | 2015/08/04 08:00 | Wei-De Lin v Lin, Winston | 2-6,1-6 |
| ITF China F12 Qual | 2015/08/03 08:00 | Lin, Winston v Tan, Li-Wie | 6-3,4-6,6-1 |
| ITF China F12 Qual | 2015/08/02 08:30 | Lin, Winston v Purcell, Rhett | 5-7,6-0,7-6 |
| ITF USA F20 | 2015/07/01 14:00 | Lin, Winston v Alex Rybakov | 5-7,2-6 |
| ITF USA F18 | 2015/06/26 20:55 | Lin, Winston v Bangoura, Sekou | 2-6,4-6 |
| ITF USA F18 | 2015/06/25 16:00 | Lin, Winston v Callahan, Hunter | 6-3,7-5 |
| ITF USA F18 | 2015/06/24 16:00 | Kamynin, Dmytro v Lin, Winston | 2-6,0-6 |
| ITF USA F17 | 2015/06/20 19:15 | Lin, Winston v Estevez Maximiliano | 5-7,0-6 |