Round: 25 Ground: Clay
| ITF Korea F8 | 2016/08/29 02:30 | Woong-Sun Jun v A-Ram Kim | 6-4,3-6,6-1 |
| Challenger Shanghai | 2015/10/10 08:35 | Woong-Sun Jun v Pierre-Hugues Herbert | 3-6,2-6 |
| WTA Kuala Lumpur Qual | 2015/09/26 06:35 | Mischa Zverev v Woong-Sun Jun | 6-4,6-2 |
| ITF Japan F8 | 2015/06/24 03:45 | Woong-Sun Jun v Takuto Niki | 2-6,6-2,4-6 |
| ITF Hong Kong F2 | 2015/06/16 05:00 | Woong-Sun Jun v Marcos Giraldi Requena | 2-6,3-6 |
| ITF Hong Kong F1 | 2015/06/09 03:45 | Cheng-Yu Yu v Woong-Sun Jun | 6-4,6-1 |
| ITF Japan F6 | 2014/06/13 00:00 | Woong-Sun Jun v Shunrou Takeshima | 7-6,1-6,4-6 |
| ITF Japan F6 | 2014/06/10 06:05 | Hiroka Kondo v Woong-Sun Jun | 3-6,4-6 |
| ITF Korea F1 | 2016/06/16 02:50 | Ji Sung Nam v Dong-Kyu Lee | 7-5,6-1 |
| ITF Korea F1 | 2016/06/15 03:45 | Ryota Kishi v Dong-Kyu Lee | 2-6,2-6 |
| ITF Korea F1 Qual | 2016/06/13 03:00 | Dong-Kyu Lee v Hyeon il Jung | 6-1,3-6,6-2 |
| ITF Korea F1 Qual | 2016/06/12 02:00 | Dong-Kyu Lee v Donghwi Shin | 6-3,6-1 |
| ITF Korea F1 Qual | 2016/06/11 01:00 | Dong-Kyu Lee v Seung-Hun Shin | 7-5,4-6,6-0 |
| ITF Korea F1 | 2015/05/20 05:00 | Dylan Seong Kwan Kim v Dong-Kyu Lee | 6-0,6-1 |
| ITF Korea F1 | 2015/05/19 03:00 | Ji Hoon Son v Dong-Kyu Lee | 6-1,4-6,2-6 |
| ITF Korea F1 | 2015/05/17 02:00 | Dong-Kyu Lee v Ku Keon Kang | 7-6,6-2 |