Stadium: Court 8 Round: 62 Ground: Hardcourt outdoor
| ITF Korea F5 | 2017/06/27 01:30 | Sungbeen Sim v Dong Ju Kim | 3-6,6-3,2-6 |
| ITF M15 Monastir | 2021/06/07 09:00 | Kazuki Nishiwaki v Dong Ju Kim | 2-6,3-6 |
| 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 | 2021/06/07 09:00 | Sungbeen Sim v Luc Koenig | 6-3,6-1 |
| ITF M15 Monastir | 2021/06/06 10:00 | Sungbeen Sim v Pierre Antoine Tailleu | 6-3,7-6 |
| ITF M15 Monastir | 2021/05/31 08:00 | Maxence Beauge v Sungbeen Sim | 7-6,6-2 |
| ITF M15 Monastir | 2021/05/24 08:00 | Sungbeen Sim v Mauro De Maio | 6-4,1-6,8-10 |
| ITF M15 Monastir | 2021/05/17 13:30 | Omni Kumar v Sungbeen Sim | 6-4,7-5 |
| ITF M15 Monastir | 2021/05/17 09:00 | Giacomo Revelli v Sungbeen Sim | 4-6,6-2,8-10 |
| ITF M15 Monastir | 2021/05/16 11:00 | Sungbeen Sim v Mihailo Popovic | 6-4,0-6,10-8 |
| ITF M15 Monastir | 2021/05/09 08:00 | Sungbeen Sim v Francois Musitelli | 2-6,3-6 |