| French Open | 2018/10/24 08:30 | Khosit Phetpradab v Dong Keun Lee | L | 1-2 |
| All England Open | 2018/09/15 03:30 | Dong Keun Lee v Khosit Phetpradab | W | 0-2 |
| Giraldilla Int. - Mixed dubbel | 2018/06/16 21:45 | Dong Keun Lee v Khosit Phetpradab | L | 2-1 |
| All England Open | 2017/11/23 08:20 | Khosit Phetpradab v Dong Keun Lee | L | 0-2 |
| India Open | 2019/03/29 08:30 | Yuxiang Huang v Khosit Phetpradab | L | 2-0 |
| India Open | 2019/03/28 07:30 | Khosit Phetpradab v Sitthikom Thammasin | W | 2-1 |
| India Open | 2019/03/27 05:50 | Khosit Phetpradab v Kartik Jindal | W | 2-0 |
| All England Open | 2019/03/06 14:30 | Kento Momota v Khosit Phetpradab | L | 2-0 |
| German Open | 2019/02/27 19:30 | Khosit Phetpradab v Joo Ven Soong | L | 0-2 |
| Indonesia Masters | 2019/01/23 05:20 | Hans-Kristian Vittinghus v Khosit Phetpradab | L | 2-1 |
| Indonesia Masters - Mixed dubbel | 2019/01/16 05:00 | Anthony Sinisuka Ginting v Khosit Phetpradab | L | 2-1 |
| Thailand Masters | 2019/01/09 12:40 | Junpeng Zhao v Khosit Phetpradab | L | 2-1 |
| Swiss Open | 2019/03/14 17:30 | Dan Lin v Dong Keun Lee | L | 2-0 |
| Swiss Open | 2019/03/13 20:20 | Dong Keun Lee v Rasmus Gemke | W | 2-0 |
| All England Open | 2019/03/06 11:15 | Jonatan Christie v Dong Keun Lee | L | 2-0 |
| Giraldilla Int. - Mixed dubbel | 2018/11/29 05:50 | Dong Keun Lee v Ihsan Maulana Mustofa | L | 0-2 |
| Giraldilla Int. - Mixed dubbel | 2018/11/28 03:00 | Dong Keun Lee v Parupalli Kashyap | W | 2-1 |
| Indonesia Masters - Mixed dubbel | 2018/11/16 04:40 | Dong Keun Lee v Wan Ho Son | L | 0-2 |
| Indonesia Masters - Mixed dubbel | 2018/11/15 10:30 | Dong Keun Lee v Jan O Jorgensen | W | 2-0 |
| Indonesia Masters - Mixed dubbel | 2018/11/14 12:00 | Tien Chen Chou v Dong Keun Lee | W | 1-2 |