Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| 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 |
| ITF M15 Daegu | 2019/06/05 01:00 | Sung Hun Kim v Sora Fukuda | 2-6,3-6 |
| ITF M15 Daegu | 2019/06/04 02:45 | Chanchai Sookton-Eng v Sung Hun Kim | 3-6,4-6 |
| ITF M15 Gimcheon | 2019/06/18 01:00 | Ren Nakamura v Minjong Park | 5-7,6-7 |
| ITF M15 Gimcheon | 2019/06/17 01:00 | Ren Nakamura v Sam Ryan Ziegann | 2-6,6-2,10-7 |
| ITF M15 Karuizawa | 2019/05/30 06:15 | Gengo Kikuchi v Ren Nakamura | 6-2,6-2 |
| ITF M15 Karuizawa | 2019/05/29 04:20 | Ren Nakamura v Winter Meagher | 6-3,6-2 |
| ITF M15 Cancun | 2019/05/07 19:45 | Ren Nakamura v Jesse Flores | 2-6,2-6 |
| ITF M25 Matsuyama | 2019/04/09 01:00 | Sho Shimabukuro v Ren Nakamura | 6-4,6-1 |
| ITF M15 Kashiwa | 2019/04/01 00:00 | Kaito Uesugi v Ren Nakamura | 6-2,6-2 |
| ITF M15 Mornington | 2019/03/24 23:00 | Joseph W. Van Meter v Ren Nakamura | 3-6,7-5,13-11 |