Stadium: 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 Cancun | 2019/09/13 21:15 | Brymer, Gage v Naoki Nakagawa | 6-3,6-2 |
| ITF M15 Cancun | 2019/09/12 17:00 | Naoki Nakagawa v Mendoza, Alejandro | 6-3,6-2 |
| ITF M15 Cancun | 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 Kim, Sung Hun | 6-2,6-2 |
| ITF M15 Anseong | 2019/06/26 04:30 | Kim, Sung Hun v Ren Nakamura | 7-6,1-6,6-0 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/19 01:00 | Hong, Seong Chan v Kim, Sung Hun | 6-0,6-1 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/18 01:00 | Lee, Tae-Woo v Kim, Sung Hun | 1-6,6-0,6-10 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/17 02:50 | Kim, Sung Hun v Kim, Young Seok | 6-4,6-3 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/12 04:00 | Sanhui Shin v Kim, Sung Hun | 6-4,6-3 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/11 02:55 | Wakita, Shunsuke v Kim, Sung Hun | 5-7,6-2,6-10 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/10 04:50 | Choi, Seungri v Kim, Sung Hun | 3-6,4-6 |