Stadium: Court 1 Round: 25 Ground: Clay
| 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 |
| ITF M15 Daegu | 2019/06/05 01:00 | Kim, Sung Hun v Sora Fukuda | 2-6,3-6 |
| ITF M15 Daegu | 2019/06/04 02:45 | Sookton-Eng, Chanchai v Kim, Sung Hun | 3-6,4-6 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/18 01:00 | Ren Nakamura v Park, Minjong | 5-7,6-7 |
| Gimcheon, Singles M-ITF-KOR-03A | 2019/06/17 01:00 | Ren Nakamura v Sam Ryan Ziegann | 2-6,6-2,10-7 |
| Karuizawa, Singles M-ITF-JPN-07A | 2019/05/30 06:15 | Kikuchi, Gengo v Ren Nakamura | 6-2,6-2 |
| Karuizawa, Singles M-ITF-JPN-07A | 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 |
| Matsuyama, Singles M-ITF-JPN-06A | 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 |
| Mornington, Singles Qualifying M-ITF-AUS-04A | 2019/03/24 23:00 | van Meter, Joseph W v Ren Nakamura | 3-6,7-5,13-11 |