Stadium: Court 5 Round: 62 Ground: Hardcourt outdoor
| ITF Korea F2 | 2018/06/09 02:00 | Yun, Jae Won v Jung, Hyeon IL | 6-4,4-6,3-6 |
| ITF Korea F5 | 2017/06/25 01:00 | Shin, Geon Ju v Yun, Jae Won | 6-4,6-3 |
| Korea F3, Singles Qualifying | 2017/06/10 05:00 | Yun, Jae Won v Shin, Seung-Hun | 3-6,2-6 |
| ITF Korea F2 | 2017/06/06 01:00 | Yun, Jae Won v Oh, Chan-Yeong | 2-6,0-6 |
| ITF Korea F1 Qual | 2017/05/27 02:00 | Yun, Jae Won v Kang, Hogi | 7-5,2-6,3-6 |
| ITF Egypt F33 | 2015/02/23 09:50 | Rossier, Simeon v Yun, Jae Won | 4-6,7-6,6-2 |
| ITF Egypt F33 | 2015/02/22 08:00 | Yun, Jae Won v von Massow, George | 6-2,7-6 |
| Egypt F6, Singles Qualifying | 2015/02/15 10:30 | Yun, Jae Won v David Pichler | 4-6,4-6 |
| ITF China F6 Qual | 2018/05/12 09:10 | Sheng Tang v Kim, Cheong Hwi | 7-5,6-3 |
| ITF China F5 Qual | 2018/05/05 09:40 | Changli Zhang v Kim, Cheong Hwi | 6-3,6-1 |
| ITF China F4 Qual | 2018/04/30 02:00 | Zheng, Weiqiang v Kim, Cheong Hwi | 6-1,6-0 |
| ITF China F4 Qual | 2018/04/29 05:15 | Kim, Cheong Hwi v Ji, Ang | 1-6,6-3,6-3 |
| ITF China F4 Qual | 2018/04/28 05:45 | Hao Fan Wang v Kim, Cheong Hwi | 2-6,6-2,2-6 |
| ITF Japan F2 | 2018/03/10 00:30 | Kim, Cheong Hwi v Kousuke Ogura | 5-7,2-6 |
| ITF Japan F1 | 2018/03/03 04:30 | Kim, Cheong Hwi v Osafune, Masaki | 1-6,1-6 |
| ITF Turkey F7 | 2018/02/18 06:30 | Miladinovic, Marko v Kim, Cheong Hwi | 6-1,6-4 |