Stadium: Court 10 Round: 25
| ITF Women Gimcheon | 2018/08/13 01:00 | Da Ye Kim v Se Jin Lee | 6-3,1-6,3-6 |
| ITF Women Gimcheon | 2018/08/12 01:00 | Se Jin Lee v Dami Lee | 6-1,6-3 |
| ITF Women Tianjin Qual | 2018/07/09 03:25 | Ya-Hsin Lee v Se Jin Lee | 3-6,6-3,6-4 |
| ITF Women Naiman | 2018/07/02 03:55 | Se Jin Lee v Na Ri Kim | 2-6,2-6 |
| ITF Women Naiman Qual | 2018/07/01 02:00 | Jiakang Li v Se Jin Lee | 3-6,1-6 |
| ITF Women Daegu Qual | 2018/06/17 01:00 | Satsuki Koike v Se Jin Lee | 6-3,6-0 |
| ITF Women Incheon Qual | 2018/05/13 03:30 | Alexa Ryngler v Se Jin Lee | 7-5,5-7,6-2 |
| ITF Women Goyang Qual | 2018/05/06 06:15 | Alana Parnaby v Se Jin Lee | 6-2,1-6,7-6 |
| ITF Women Sangju | 2018/06/07 02:50 | BoYoung Jeong v Eunhye Lee | 0-6,3-6 |
| ITF Women Sangju | 2018/06/06 05:15 | Warona Mdlulwa v BoYoung Jeong | 5-7,1-6 |