Stadium: Court 3 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Nonthaburi | 2020/02/02 06:00 | Reese Stalder v Kazuki Nishiwaki | 7-6,7-5 |
| ITF M25 Nonthaburi | 2020/01/26 02:30 | Kazuki Nishiwaki v Rimpei Kawakami | 6-7,2-6 |
| Challenger Kobe | 2019/11/04 08:30 | Kazuki Nishiwaki v Yosuke Watanuki | 3-6,4-6 |
| Challenger Kobe | 2019/11/04 01:30 | Kazuki Nishiwaki v Timur Khabibulin | 3-6,1-6 |
| ITF M25 Tay Ninh | 2019/10/10 05:00 | Billy Harris v Kazuki Nishiwaki | 6-4,6-4 |
| ITF M25 Tay Ninh | 2019/10/09 03:30 | Kazuki Nishiwaki v Tsung-Hua Yang | 2-6,6-4,6-4 |
| ITF M25 Tay Ninh | 2019/10/05 09:00 | Kazuki Nishiwaki v Daniel Nguyen | 2-6,3-6 |
| ITF M25 Tay Ninh | 2019/10/04 08:00 | Yusuke Takahashi v Kazuki Nishiwaki | 0-6,6-3,2-6 |
| ITF M15 Monastir | 2021/05/30 09:30 | Dong Ju Kim v Ren Nakamura | 7-5,6-7,5-10 |
| ITF M15 Monastir | 2021/05/24 12:30 | Uisung Park v Dong Ju Kim | 6-4,6-1 |
| ITF M15 Monastir | 2021/05/24 08:00 | Dong Ju Kim v Lucio Carnevalle | 7-5,6-3 |
| ITF M15 Monastir | 2021/05/23 08:00 | Alfredo Casso v Dong Ju Kim | 1-6,2-6 |
| ITF M15 Monastir | 2021/05/17 12:30 | Tomas Farjat v Dong Ju Kim | 7-5,7-5 |
| ITF M15 Monastir | 2021/05/17 08:00 | Dong Ju Kim v Bautista Vilicich | 1-6,6-4,10-4 |
| ITF M15 Monastir | 2021/05/16 08:00 | Dong Ju Kim v Laelson Rodrigues | 6-3,6-1 |
| ITF M15 Monastir | 2021/05/12 11:55 | Dong Ju Kim v Mattia Frinzi | 3-6,1-6 |