Estádio: Court D Round: 25 Ground: Hardcourt outdoor
| ITF - M25 Tay Ninh | 2019/10/11 05:00 | Yan Bai v Naoki Nakagawa | 6-2,7-5 |
| ITF - M25 Tay Ninh | 2019/10/10 02:00 | Alexey Zakharov v Naoki Nakagawa | 4-6,7-6,5-7 |
| ITF - M25 Tay Ninh | 2019/10/08 03:45 | Naoki Nakagawa v Shintaro Imai | 6-2,6-1 |
| ITF - M25 Tay Ninh | 2019/10/03 02:00 | Yusuke Takahashi v Naoki Nakagawa | 6-4,6-3 |
| ITF - M25 Tay Ninh | 2019/10/02 02:00 | Credit Chaiyarin v Naoki Nakagawa | 4-6,0-6 |
| ITF - M15 Cancún | 2019/09/13 21:15 | Gage Brymer v Naoki Nakagawa | 6-3,6-2 |
| ITF - M15 Cancún | 2019/09/12 17:00 | Naoki Nakagawa v Alejandro Mendoza | 6-3,6-2 |
| ITF - M15 Cancún | 2019/09/11 18:15 | Naoki Nakagawa v Matt Kuhar | 6-3,4-6,6-2 |
| ITF - M15 Anseong | 2019/06/27 02:40 | Thomas Fancutt v Sung Hun Kim | 6-2,6-2 |
| ITF - M15 Anseong | 2019/06/26 04:30 | Sung Hun Kim v Ren Nakamura | 7-6,1-6,6-0 |
| ITF - M15 Gimcheon | 2019/06/19 01:00 | Seong Chan Hong v Sung Hun Kim | 6-0,6-1 |
| ITF - M15 Gimcheon | 2019/06/18 01:00 | Tae-Woo Lee v Sung Hun Kim | 1-6,6-0,6-10 |
| ITF - M15 Gimcheon | 2019/06/17 02:50 | Sung Hun Kim v Young Seok Kim | 6-4,6-3 |
| ITF - M15 Gimcheon | 2019/06/12 04:00 | Sanhui Shin v Sung Hun Kim | 6-4,6-3 |
| ITF - M15 Gimcheon | 2019/06/11 02:55 | Shunsuke Wakita v Sung Hun Kim | 5-7,6-2,6-10 |
| ITF - M15 Gimcheon | 2019/06/10 04:50 | Seungri Choi v Sung Hun Kim | 3-6,4-6 |