Stadium: Court 3 Round: 44
| ITF Women Daegu Qual | 2018/06/17 02:00 | Eun Se Jang v Mami Hasegawa | 2-6,3-6 |
| ITF Women Gyeongsan Qual | 2018/06/12 01:00 | Yeong Won Jeong v Mami Hasegawa | 6-4,7-6 |
| ITF Women Gyeongsan Qual | 2018/06/11 02:00 | Nagisa Morimoto v Mami Hasegawa | 6-4,2-6,2-6 |
| ITF Women Sangju Qual | 2018/06/04 05:00 | Mami Hasegawa v Jin Ju Lee | 4-6,4-6 |
| ITF Women Gifu Qual | 2018/04/29 01:00 | Satsuki Koike v Mami Hasegawa | 6-1,6-0 |
| ITF Women Osaka Qual | 2018/04/08 03:30 | Mami Hasegawa v Nicha Lertpitaksinchai | 6-2,6-7,4-6 |
| ITF Women Osaka Qual | 2018/04/07 04:00 | Nagomi Higashitani v Mami Hasegawa | 7-6,4-6,1-6 |
| ITF Women Kofu Qual | 2018/03/26 01:00 | Mami Hasegawa v Shiho Akita | 2-6,0-6 |
| ITF Women Gyeongsan | 2018/06/14 05:50 | Se-Hyun Kim v Hyojung Yea | 4-6,0-6 |
| ITF Women Gyeongsan | 2018/06/12 02:30 | Se-Hyun Kim v Kwan Yau Ng | 6-1,6-3 |
| ITF Women Sangju | 2018/06/06 05:15 | Subin Park v Se-Hyun Kim | 1-6,6-3,6-2 |
| ITF Women Changwon Qual | 2018/05/21 01:00 | Hyojung Yea v Se-Hyun Kim | 6-1,1-6,6-0 |
| ITF Women Incheon Qual | 2018/05/14 03:30 | Maddison Inglis v Se-Hyun Kim | 6-3,5-7,6-2 |
| ITF Women Incheon Qual | 2018/05/13 03:30 | Se-Hyun Kim v Seunghyun Lee | 6-2,6-0 |
| ITF Women Goyang | 2018/05/08 05:05 | En Shuo Liang v Se-Hyun Kim | 3-6,7-5,6-0 |
| ITF Women Sharm El Sheikh | 2017/11/16 16:05 | Se-Hyun Kim v Jodie Anna Burrage | 1-6,4-6 |