| ITF M15 Anseong | 06/12 01:00 | 25 | Woohyuk Chang v Naoki Tajima | 1-6,2-6 | |
| ITF M15 Daegu | 06/03 01:00 | 62 | Ji Hoon Son v Woohyuk Chang | 6-1,6-4 | |
| ITF M25 Changwon | 06/12 00:55 | 62 | Geun Jun Kim v Woohyuk Chang | Retired | |
| ITF M25 Changwon | 06/11 04:10 | 62 | Seon Yong Han v Woohyuk Chang | 5-7,3-6 | |
| ITF M25 Daegu | 06/05 00:50 | 62 | Jake Delaney v Woohyuk Chang | 6-1,6-3 | |
| ITF M15 Changwon | 08/21 01:00 | 62 | Dae-Hee Lee v Woohyuk Chang | Retired |