Stadium: Court 8 Round: 62 Ground: Hardcourt outdoor
| ITF Korea F2 | 2018/06/09 01:00 | Yoon, Jaeheon v Choi, Seungri | 6-1,7-5 |
| ITF Korea F1 | 2018/06/02 01:00 | Cho, Hyeong Jin v Choi, Seungri | 6-2,6-4 |
| Challenger Gwangju Qual | 2017/09/16 02:55 | Choi, Seungri v Niesten, Miliaan | 2-6,4-6 |
| ITF Korea F5 | 2017/06/28 01:00 | Choi, Seungri v Song, Min-Kyu | 1-6,2-6 |
| ITF Korea F4 | 2017/06/20 01:00 | Makoto Ochi v Choi, Seungri | 6-1,6-1 |
| ITF Korea F3 | 2017/06/14 01:00 | Choi, Seungri v Jeong, Young-Hoon | 3-6,0-6 |
| ITF Korea F2 | 2017/06/07 04:20 | Kwon, OH-Hee v Choi, Seungri | 6-0,6-1 |
| ITF Korea F1 | 2017/05/30 01:00 | Choi, Jae-Won v Choi, Seungri | 6-3,6-1 |
| Korea F3, Singles Qualifying | 2018/06/17 03:00 | Yoon, Ilsang v Yoon, Jaeheon | 7-5,6-2 |
| Korea F3, Singles Qualifying | 2018/06/16 02:00 | Yoon, Ilsang v Kim, Dong Ju | 6-2,6-2 |
| ITF Korea F1 | 2018/06/03 01:00 | Jeong, Young-Hoon v Yoon, Ilsang | 6-4,5-7,6-2 |
| ITF Korea F1 | 2018/06/02 03:30 | Yoon, Ilsang v Han, Jin Sung | 7-6,4-6,6-3 |
| Indonesia F8, Singles Qualifying | 2017/11/26 05:10 | Manish Sureshkumar v Yoon, Ilsang | 6-0,6-1 |
| Indonesia F8, Singles Qualifying | 2017/11/25 06:00 | Tagashira, Kento v Yoon, Ilsang | 6-7,6-3,6-7 |
| ITF Indonesia F7 Qual | 2017/11/19 05:25 | Natthasith Kunsuwan v Yoon, Ilsang | 6-2,7-5 |
| ITF Indonesia F7 Qual | 2017/11/18 03:00 | Yoon, Ilsang v Goldenberg, Dustin | 6-4,6-3 |