| Korea Masters | 11/08 08:20 | 5 | Lan Xi Lei v Kim, Donghun (1993) | L | 2-1 | |
| Korea Masters 2019, MS, Qualification | 11/07 05:10 | - | Geonyeop Cho v Kim, Donghun (1993) | W | 1-2 | |
| Korea Masters 2019, MS, Qualification | 11/07 01:40 | 4 | Phone Pyae Naing v Kim, Donghun (1993) | W | 0-2 | |
| Vietnam Open | 09/13 01:30 | 6 | Keisuke Fujiwara v Kim, Donghun (1993) | L | 2-1 | |
| Vietnam Open Qual | 09/12 07:00 | 4 | Kien Hwa King v Kim, Donghun (1993) | W | 1-2 | |
| Vietnam Open Qual | 09/12 02:15 | 4 | Kim, Donghun (1993) v Woraphop Chuenkha | W | 2-0 | |
| Korea Open 2019, MS, Qualification | 07/18 01:00 | - | Kim, Dong Hoon v Lee, Dong Keun | L | 0-2 | |
| Indonesia Masters | 10/19 10:00 | 5 | Kim, Donghun (1993) v Koki Watanabe | L | 0-2 | |
| Indonesia Masters | 10/18 11:20 | 6 | Kim, Donghun (1993) v Ramlie, Yonathan | W | 2-0 | |
| Denmark Masters | 06/10 17:40 | - | Kiran George v Kim, Donghun (1993) | L | 2-1 | |
| Denmark Masters | 06/10 11:40 | - | Sholeh Aidil v Kim, Donghun (1993) | W | 0-2 | |
| Korea Masters | 04/14 05:00 | - | Hyeok Jin Jeon v Kim, Donghun (1993) | L | 2-0 | |
| Korea Masters | 04/13 03:00 | 5 | Kim, Donghun (1993) v Jun Peng Zhao | W | 2-1 | |
| Korea Open | 04/07 03:40 | - | Kim, Donghun (1993) v Tze Yong Ng | L | 0-2 | |
| Korea Open | 04/05 03:50 | 5 | Kim, Donghun (1993) v Kai Schaefer | W | 2-0 | |
| Thomas Cup | 10/11 17:20 | - | Kim, Donghun (1993) v Arnaud Merkle | L | 0-2 | |
| Thomas Cup | 10/09 17:40 | - | Kim, Donghun (1993) v Fabian Roth | L | 1-2 | |
| Korea Masters | 11/22 04:00 | 3 | Kim, Donghun (1993) v Kanta Tsuneyama | L | 1-2 | |
| Korea Masters | 11/21 05:00 | 4 | Sameer Verma v Kim, Donghun (1993) | W | 0-2 | |
| Korea Masters | 11/20 01:30 | 5 | Kim, Donghun (1993) v Verma, Sourabh | W | 2-1 | |
| Korea Masters 2019, MS, Qualification | 11/19 04:40 | - | Kim, Donghun (1993) v Lee, Hyun Il | W | 2-0 | |
| Korea Masters 2019, MS, Qualification | 11/19 02:10 | - | Ha, Young Woong v Kim, Donghun (1993) | W | 0-2 | |
| Indonesia International Challenge 2019, MS | 10/23 07:20 | 5 | Kim, Donghun (1993) v Christian Adinata | L | 0-2 | |
| Indonesia International Challenge 2019, MS | 10/22 10:45 | 6 | Kim, Donghun (1993) v Apriyandi, Muhammad Aldo | W | 2-0 | |
| Korea Open | 09/26 03:10 | 4 | Kento Momota v Kim, Donghun (1993) | L | 2-0 | |
| Korea Open | 09/25 06:25 | 5 | Rasmus Gemke v Kim, Donghun (1993) | W | 1-2 | |
| Korea Open 2019, MS, Qualification | 09/24 05:00 | - | Lee, Dong Keun v Kim, Donghun (1993) | W | 0-2 | |
| Korea Open 2019, MS, Qualification | 09/24 01:40 | - | Kim, Donghun (1993) v Choi, Ji Hoon | W | 2-1 | |
| Vietnam Open Qual | 09/10 09:05 | - | Kim, Donghun (1993) v Saran Jamsri | L | 0-2 | |
| Vietnam Open Qual | 09/10 04:00 | - | Chiang, Chien-Wei v Kim, Donghun (1993) | W | 0-2 |