Round: 25 Ground: Hardcourt outdoor
| ITF Hong Kong F3 | 2015/06/21 02:00 | Seong-Gook Oh v Li-Wei Tan | 3-6,1-6 |
| ITF Hong Kong F3 | 2015/06/20 02:00 | Seong-Gook Oh v Wing-Lun Lam | 6-4,6-1 |
| ITF Hong Kong F2 | 2015/06/18 02:00 | Seong-Gook Oh v Marcos Giraldi Requena | 3-6,1-6 |
| ITF Hong Kong F2 | 2015/06/17 04:25 | Hyun-Woo Nam v Seong-Gook Oh | 2-6,2-6 |
| ITF Hong Kong F2 | 2015/06/15 04:35 | Shao-Fan Liu v Seong-Gook Oh | 5-7,7-6,0-6 |
| ITF Hong Kong F2 Qual | 2015/06/14 02:00 | Kai Yuen Leung v Seong-Gook Oh | 1-6,1-6 |
| ITF Korea F1 | 2015/05/17 02:00 | Seong-Gook Oh v Hyung-Chan Lim | 4-6,1-6 |
| ITF USA F28 | 2015/09/27 19:00 | Ren Nakamura v Strong Kirchheimer | 2-6,2-6 |
| ITF USA F27 Qual | 2015/09/18 19:30 | Alexander Cozbinov v Ren Nakamura | 6-2,6-2 |
| ITF USA F26 Qual | 2015/09/12 16:00 | Ren Nakamura v Alessandro-D Ventre | 3-6,6-7 |
| ITF USA F26 Qual | 2015/09/11 17:00 | Ren Nakamura v Keenan Mayo | 6-0,6-3 |
| ITF Canada F5 | 2015/07/22 19:25 | Aleksandar Vukic v Ren Nakamura | 6-4,6-2 |
| ITF Canada F4 Qual | 2015/06/29 19:30 | Ren Nakamura v Victor Krustev | 6-2,6-1 |
| ITF Canada F3 | 2015/06/23 18:00 | Raymond Sarmiento v Ren Nakamura | 5-7,4-6 |
| ITF Japan F5 | 2015/06/01 01:00 | Ryota Kishi v Ren Nakamura | 6-3,6-4 |