Stadium: Court 1 Round: 62 Ground: Hardcourt outdoor
| 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 |
| ITF M15 Monastir | 2021/05/10 12:30 | Fabio Coelho v Dong Ju Kim | 6-4,6-2 |
| ITF M15 Monastir | 2021/05/24 13:45 | Maxence Beauge v Ren Nakamura | 6-3,6-2 |
| ITF M15 Monastir | 2021/05/24 09:00 | Antoine Vincent v Ren Nakamura | 6-1,1-6,9-11 |
| ITF M15 Monastir | 2021/05/23 11:30 | Laelson Rodrigues v Ren Nakamura | 4-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/03/21 16:00 | Ren Nakamura v Toby D. Boyer | 4-6,2-6 |
| ITF M15 Sharm El Sheikh | 2021/03/14 13:00 | Zura Tkemaladze v Ren Nakamura | 6-3,6-3 |
| ITF M15 Sharm El Sheikh | 2021/03/07 13:00 | Daniel Little v Ren Nakamura | 6-4,6-4 |
| ITF M15 Sharm El Sheikh | 2020/02/03 08:00 | Ren Nakamura v Anthony Turchi | 5-7,3-6 |
| ITF M15 Káhira | 2020/01/30 08:35 | Ren Nakamura v Mathieu Perchicot | 1-6,4-6 |