Stadium: Court 1 Round: 25
| ITF Women Yeongwol | 2018/09/04 01:00 | Lee, Seunghyun v Jang, Eun SE | 6-2,6-1 |
| ITF Women Yeongwol | 2018/09/03 01:00 | Kwon, Mi Jeong v Lee, Seunghyun | 4-6,2-6 |
| ITF Women Yeongwol | 2018/09/02 01:00 | Kim, Sun Bin v Lee, Seunghyun | 1-6,2-6 |
| ITF Women Yeongwol | 2018/08/28 02:00 | Um, Seon Young v Lee, Seunghyun | 6-4,7-6 |
| ITF Women Gimcheon | 2018/08/20 02:00 | Subin Park v Lee, Seunghyun | 6-3,6-0 |
| ITF Women Gimcheon | 2018/08/12 01:00 | Natarajan, Ramya v Lee, Seunghyun | 6-2,6-2 |
| ITF Women Daegu Qual | 2018/06/17 02:00 | Sul, You-Na v Lee, Seunghyun | 6-3,6-1 |
| ITF Women Gyeongsan Qual | 2018/06/11 01:00 | Eunhye Lee v Lee, Seunghyun | 2-6,6-1,6-1 |
| ITF Women Daegu | 2018/06/20 01:00 | Lee, So-Ra v Doi, Misaki | 1-6,2-6 |
| ITF Women Singapore | 2018/06/12 06:20 | Hiroko Kuwata v Lee, So-Ra | 6-2,7-6 |
| ITF Women Singapore Qual | 2018/06/10 04:25 | Lee, So-Ra v Montez, Pamela | 6-2,6-3 |
| ITF Women Singapore Qual | 2018/06/09 05:00 | Lee, So-Ra v Zara Brankovic | 6-2,6-2 |
| ITF Women Changwon | 2018/05/25 01:00 | Lee, So-Ra v Ya-Hsuan Lee | 4-6,4-6 |
| ITF Women Changwon | 2018/05/24 01:00 | Silich, Alina v Lee, So-Ra | 0-6,2-6 |
| ITF Women Changwon | 2018/05/23 01:00 | Lumsden, Maia v Lee, So-Ra | 2-6,3-6 |
| Changwon, Singles Qualifying W-WITF-KOR-01A | 2018/05/22 01:00 | Lee, So-Ra v Sheng, Yuqi | 6-1,7-5 |