Stadium: Court 2 Round: 26
| ITF Korea F4 | 2018/08/16 01:00 | Seong-Gook Oh v Oh-Hee Kwon | 6-4,6-4 |
| ITF Korea F6 | 2018/08/28 02:00 | Oh-Hee Kwon v Daisuke Sumizawa | 6-1,6-4 |
| ITF Korea F5 | 2018/08/22 02:00 | Oh-Hee Kwon v Hong Chung | 3-6,1-6 |
| ITF Korea F5 | 2018/08/21 03:00 | Jumpei Yamasaki v Oh-Hee Kwon | 4-6,4-6 |
| ITF Korea F4 | 2018/08/16 01:00 | Seong-Gook Oh v Oh-Hee Kwon | 6-4,6-4 |
| ITF Korea F4 | 2018/08/14 02:30 | Oh-Hee Kwon v Seong Taek Im | 6-3,6-4 |
| ITF Korea F3 | 2018/06/22 03:00 | Yunseong Chung v Oh-Hee Kwon | 6-4,6-1 |
| ITF Korea F3 | 2018/06/20 02:30 | Oh-Hee Kwon v Seong Chan Hong | 7-5,6-4 |
| ITF Korea F3 | 2018/06/19 06:35 | Cing-Yang Meng v Oh-Hee Kwon | 1-6,2-6 |
| ITF Korea F6 | 2018/08/28 02:00 | William Ma v Seong-Gook Oh | 6-4,2-6,0-6 |
| ITF Korea F4 | 2018/08/19 03:15 | Jae Hwan Kim v Seong-Gook Oh | 6-3,3-6,4-6 |
| ITF Korea F4 | 2018/08/18 01:00 | Seong-Gook Oh v Uisung Park | 6-4,6-2 |
| ITF Korea F4 | 2018/08/17 01:00 | Seong-Gook Oh v Mousheg Hovhannisyan | 4-6,6-4,6-2 |
| ITF Korea F4 | 2018/08/16 01:00 | Seong-Gook Oh v Oh-Hee Kwon | 6-4,6-4 |
| ITF Malaysia F2 | 2018/07/10 03:50 | Rhett Purcell v Seong-Gook Oh | 7-6,7-5 |
| ITF Malaysia F1 | 2018/07/04 03:30 | Soichiro Moritani v Seong-Gook Oh | 6-4,6-0 |
| ITF Malaysia F1 | 2018/07/03 10:05 | Seong-Gook Oh v Sang-Woo Noh | 7-6,6-2 |