Ground: Hardcourt outdoor
| ITF Japan F2 | 2015/03/15 01:00 | Ryota Tanuma v Ken Onishi | 2-6,6-4,3-6 |
| ITF Japan F2 | 2015/03/14 00:30 | Ryota Tanuma v Kazuki Nishiwaki | 6-4,6-4 |
| ITF USA F9 Qual | 2015/02/23 14:30 | Rafael Matos v Ryota Tanuma | 6-4,6-4 |
| ITF USA F9 Qual | 2015/02/21 15:00 | Moritz Dettinger v Ryota Tanuma | 0-6,4-6 |
| ITF USA F9 Qual | 2015/02/20 18:00 | Antoine Leduc v Ryota Tanuma | 2-6,7-6,1-6 |
| ITF USA F8 Qual | 2015/02/15 17:30 | Dominic Cotrone v Ryota Tanuma | 6-3,6-2 |
| ITF USA F7 | 2015/02/11 14:30 | Tommy Paul v Ryota Tanuma | 6-2,6-2 |
| ITF USA F7 Qual | 2015/02/09 15:30 | Weiqiang Zheng v Ryota Tanuma | 1-6,3-6 |
| ITF Japan F2 | 2015/03/17 01:00 | Duckhee Lee v Gengo Kikuchi | 6-2,3-6,6-3 |
| ITF Japan F1 | 2015/03/13 03:55 | Gengo Kikuchi v Duckhee Lee | 6-7,0-6 |
| ITF Japan F1 | 2015/03/12 02:45 | Yunseong Chung v Gengo Kikuchi | 6-1,6-7,5-7 |
| ITF Turkey F32 | 2014/09/17 10:55 | Gengo Kikuchi v Timur Kiyamov | 2-6,1-6 |
| ITF Hong Kong F2 | 2014/07/16 02:00 | Gengo Kikuchi v Ruan Roelofse | 4-6,1-6 |
| ITF Hong Kong F2 | 2014/07/14 03:30 | Gengo Kikuchi v Hiromasa Oku | 6-7,6-4,6-2 |
| ITF Hong Kong F1 | 2014/07/10 03:30 | Gengo Kikuchi v Yuichi Ito | 1-6,7-6,6-7 |
| ITF Hong Kong F1 | 2014/07/07 02:00 | Gengo Kikuchi v Sidharth Rawat | 6-2,6-4 |