Round: 45 Ground: Hardcourt outdoor
| ITF Thailand F9 | 2015/04/19 03:00 | Katsuki Nagao v Sonchat Ratiwatana | 6-3,6-3 |
| ITF Thailand F9 | 2015/04/18 04:00 | Sonchat Ratiwatana v Syed Mohd Agil Syed Naguib | 6-3,6-1 |
| ITF Japan F4 | 2015/03/29 00:00 | Jarryd Chaplin v Sonchat Ratiwatana | 5-7,6-3,6-2 |
| ITF Thailand F9 | 2015/04/19 04:00 | Sidharth Rawat v Sanchai Ratiwatana | 6-2,6-3 |
| ITF Thailand F9 | 2015/04/18 05:00 | Sanchai Ratiwatana v Mohd Assri Merzuki | 6-1,6-1 |
| ITF Japan F4 | 2015/03/29 00:00 | Sanchai Ratiwatana v Yuto Sakai | 6-4,3-6,1-6 |