Stadium: Court 6 Round: 44
| ITF Women Gyeongsan Qual | 2018/06/11 02:00 | Jeong, Yeong Won v Kim, Da Hye | 6-1,7-6 |
| ITF Women Sangju Qual | 2018/06/04 01:00 | Jeong, Yeong Won v Eri Shimizu | 5-7,4-6 |
| Changwon, Singles Qualifying W-WITF-KOR-01A | 2018/05/20 03:00 | Routliffe, Erin v Jeong, Yeong Won | 6-1,6-2 |
| ITF Women Incheon Qual | 2018/05/14 03:30 | Jeong, Yeong Won v Routliffe, Erin | 4-6,0-6 |
| ITF Women Incheon Qual | 2018/05/13 03:30 | Jeong, Yeong Won v Eunji Lim | 6-3,6-3 |
| ITF Women Goyang | 2018/05/09 05:45 | Jeong, Yeong Won v Hibi, Mayo | 0-6,3-6 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2017/11/15 14:00 | Jeong, Yeong Won v Talbi, Shalimar | 6-3,4-6,3-6 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2017/11/13 14:00 | Iakovleva, Anna v Jeong, Yeong Won | 1-6,6-4,2-6 |
| ITF Women Gyeongsan Qual | 2018/06/11 02:00 | Morimoto, Nagisa v Hasegawa, Mami | 6-4,2-6,2-6 |
| ITF Women Sangju Qual | 2018/06/04 05:00 | Hasegawa, Mami v Lee, Jin Ju | 4-6,4-6 |
| ITF Women Gifu Qual | 2018/04/29 01:00 | Koike, Satsuki v Hasegawa, Mami | 6-1,6-0 |
| ITF Women Osaka Qual | 2018/04/08 03:30 | Hasegawa, Mami v Lertpitaksinchai, Nicha | 6-2,6-7,4-6 |
| ITF Women Osaka Qual | 2018/04/07 04:00 | Nagomi Higashitani v Hasegawa, Mami | 7-6,4-6,1-6 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/03/26 01:00 | Hasegawa, Mami v Shiho Akita | 2-6,0-6 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/03/25 02:30 | Hasegawa, Mami v Takahata, Kotomi | 6-2,7-6 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/03/24 04:00 | Zhang, Ling v Hasegawa, Mami | 6-4,4-6,6-7 |