Dong Ju Kim
2019
| JB1 SEOGWIPO | 1R | |
| J2 CHUNCHEON | Final | |
| J5 YEONGWOL | [1] | Win |
| J5 GIMCHEON | [1] | Win |
| J5 SUNCHANG | [1] | Win |
| J4 JEJU | [1] | Win |
2018
| J2 CHUNCHEON | 1R | |
| J4 HYOGO-2 | [6] | Quarter |
| J4 HYOGO | [7] | 2R |
| J2 SHANGHAI | Quarter | |
| J4 JINAN | [6] | Quarter |
| J4 JEJU | [2] | Semi |
| J2 KOLKATA | 1R | |
| J2 NEWDELHI | 1R | |
| J3 CHANDIGARH | 1R |
2017
| J2 CHUNCHEON | [6] | 1R |
| J2 NONTHABURI | 1R | |
| J3 SARAWAK | 3R | |
| J4 JEJU | [14] | Semi |
Nation
KOR
World Ranking
ATP Ranking　814th
Year-end Junior World Ranking
- Year-end 2020 209th
- Year-end 2019 210th
Rival
seonung cho (2-0)
junhyeon lee (2-0)
gunuk kang (2-0)
min seong kim (2-0)
yu zhang (1-1)
Match Details
JB1 SEOGWIPO
| L | 1R | Coleman Wong | 3-6 5-7 |
J2 CHUNCHEON
| W | 1R | William Nolan | 6-1 6-2 |
| W | 2R | Rostislav Halfinger | 6-4 7-6 |
| W | QF | Alex Bulte | 6-3 6-2 |
| W | SF | Philip Sekulic | 6-0 2-6 7-5 |
| L | F | Shunsuke Mitsui | 6-7 0-3 |
J5 YEONGWOL
| W | 1R | Donghyeon Kim | 6-0 6-2 |
| W | 2R | Gunuk Kang | 6-0 6-2 |
| W | 3R | Min Jae Kim | 6-3 6-1 |
| W | QF | Junhyeon Lee | 6-1 6-1 |
| W | SF | Seonung Cho | 6-1 6-1 |
| W | F | Woohyuk Sim | 6-4 6-3 |
J5 GIMCHEON
| W | 1R | Min Kyu Cho | 6-2 6-1 |
| W | 2R | Min Seong Kim | 6-0 6-4 |
| W | 3R | Suk Ann | 6-2 6-3 |
| W | QF | Hyeoung Jin Kim | 6-2 6-2 |
| W | SF | Jungwon Park | 6-2 6-2 |
| W | F | Wanseok Kang | 6-1 6-0 |
J5 SUNCHANG
| W | 1R | Min Seong Kim | 6-1 6-0 |
| W | 2R | Minseok Choi | 6-0 6-2 |
| W | 3R | Youn Bin Kim | 6-0 6-0 |
| W | QF | Gunuk Kang | 6-1 6-1 |
| W | SF | Yong Joon Park | 6-3 6-2 |
| W | F | Junhyeon Lee | 6-2 6-1 |
J4 JEJU
| W | 2R | Junsu Kang | 6-1 |
| W | 3R | Hwijin Jung | 6-1 6-1 |
| W | QF | Homin Kwag | 6-4 6-3 |
| W | SF | Alexander Petrov | 6-4 6-0 |
| W | F | Seonung Cho | 6-3 3-6 6-0 |
J2 CHUNCHEON
| L | 1R | Tomoya Ikeda | 7-5 5-7 2-6 |
J4 HYOGO-2
| W | 1R | Hikaru Takeda | 6-1 6-3 |
| W | 2R | Taisei Kageyama | 6-1 6-1 |
| L | QF | Yu Zhang | 3-6 0-6 |
J4 HYOGO
| W | 1R | Shoei Mizuguchi | 6-1 6-1 |
| L | 2R | Riku Takahata | 5-7 6-3 1-6 |
J2 SHANGHAI
| W | 1R | Yuchen Wu | 6-2 3-6 6-3 |
| W | 2R | Zhao Zhao | 7-5 6-2 |
| L | QF | Digvijay Pratap Singh | 5-7 0-6 |
J4 JINAN
| W | 2R | Hanyang Liu | 6-3 6-0 |
| W | 3R | Yu Zhang | 6-2 7-5 |
| L | QF | Renlong Pang | 3-6 3-6 |
J4 JEJU
| W | 2R | Je Won Jeon | 6-0 6-0 |
| W | 3R | Jun Ha Hyun | 6-4 6-0 |
| W | QF | Suk Hyun Chu | 6-4 6-1 |
| L | SF | Geun Jun Kim | 4-6 3-6 |
J2 KOLKATA
| L | 1R | Dev Javia | 6-2 4-6 1-6 |
J2 NEWDELHI
| L | 1R | Brandon Perez | 6-1 2-6 0-6 |
J3 CHANDIGARH
| L | 1R | Dev Javia | 2-6 3-6 |
J2 CHUNCHEON
| L | 1R | Suk Hyun Chu | 4-6 3-6 |
J2 NONTHABURI
| L | 1R | Chang-Lin Tsai | 0-6 4-6 |
J3 SARAWAK
| W | 1R | Chieh Cheng Yu | 6-3 6-2 |
| W | 2R | Megh Bhargav Patel | 3-6 6-3 6-2 |
| L | 3R | Lukas Hellum Lilleengen | 3-6 1-6 |
J4 JEJU
| W | 2R | Seokwoo Yoon | 6-1 6-0 |
| W | 3R | Wai Yu Kai | 6-2 6-1 |
| W | QF | Dohyun Kim | 4-6 6-3 6-0 |
| L | SF | Jaewoo Kim | 3-6 1-6 |
Junior Tennis Database is a site that summarizes the results of ITF junior tennis tournaments.
Number of registered tournaments: 14549, Number of registered players: 7,577, Number of registered results: 451,713