| All England Open | 2018/09/15 03:30 | Dong Keun Lee v Khosit Phetpradab | W | 0-2 |
| US Open | 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 |
| Denmark Open | 2018/10/19 14:00 | Khosit Phetpradab v Kento Momota | L | 0-2 |
| Denmark Open | 2018/10/18 07:40 | Khosit Phetpradab v Ka Long Angus Ng | W | 2-0 |
| Denmark Open | 2018/10/16 07:00 | Khosit Phetpradab v Brice Leverdez | W | 2-0 |
| All England Open | 2018/09/18 10:00 | Viktor Axelsen v Khosit Phetpradab | L | 2-0 |
| All England Open | 2018/09/16 02:40 | Kento Momota v Khosit Phetpradab | L | 2-0 |
| All England Open | 2018/09/15 03:30 | Dong Keun Lee v Khosit Phetpradab | W | 0-2 |
| All England Open | 2018/09/14 02:10 | Long Chen v Khosit Phetpradab | W | 0-2 |
| All England Open | 2018/09/13 05:30 | Mark Caljouw v Khosit Phetpradab | W | 0-2 |
| Denmark Open | 2018/10/17 08:20 | Tien Chen Chou v Dong Keun Lee | L | 2-1 |
| Indonesia Masters XD | 2018/09/26 01:40 | Kwang Hee Heo v Dong Keun Lee | L | 2-0 |
| All England Open | 2018/09/18 04:00 | Jan O Jorgensen v Dong Keun Lee | L | 2-1 |
| All England Open | 2018/09/15 03:30 | Dong Keun Lee v Khosit Phetpradab | L | 0-2 |
| All England Open | 2018/09/14 01:30 | Srikanth Kidambi v Dong Keun Lee | W | 1-2 |
| All England Open | 2018/09/13 04:00 | Dong Keun Lee v Wan Ho Son | W | 2-0 |
| All England Open | 2018/09/11 08:45 | Dong Keun Lee v Sameer Verma | W | 2-1 |
| Giraldilla Int. XD | 2018/06/20 23:00 | Dong Keun Lee v Cao Cuong Pham | L | 0-2 |