Stadium: Court 5 Round: 54
| ITF Women Kashiwa Qual | 2018/04/01 05:00 | Momoko Kobori v Chiang, Yuki Kristina | 6-2,6-3 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/03/26 03:55 | Momoko Kobori v Rebecca Marino | 6-2,2-6,3-6 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/03/25 02:30 | Momoko Kobori v Chan, Chin-Wei | 6-2,6-2 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/03/24 03:00 | Momoko Kobori v Yoshitomi, Yumeko | 6-0,6-1 |
| ITF Women Toyota Qual | 2018/03/12 03:25 | Momoko Kobori v Ya-Hsuan Lee | 7-5,2-6,1-6 |
| ITF Women Toyota Qual | 2018/03/11 05:00 | Momoko Kobori v Yexin Ma | 5-7,7-5,6-0 |
| ITF Women Toyota Qual | 2018/03/10 08:00 | Momoko Kobori v Cheong, Naomi | 6-0,6-0 |
| Yokohama, Singles W-WITF-JPN-01B | 2018/03/09 05:30 | Momoko Kobori v Veronika Kudermetova | 6-2,3-6,2-6 |
| ITF Women Kashiwa Qual | 2018/04/01 05:00 | Yoshitomi, Aiko v Jeong, Sunam | 1-6,6-7 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/20 01:00 | Dabin Kim v Jeong, Sunam | 6-4,3-6,6-1 |
| ITF Women Toyota Qual | 2018/03/12 01:00 | Inoue, Miyabi v Jeong, Sunam | 6-4,6-2 |
| ITF Women Toyota Qual | 2018/03/11 01:00 | Choi, Ji-Hee v Jeong, Sunam | 2-6,2-6 |
| ITF Women Toyota Qual | 2018/03/10 01:00 | Ng, Kwan Yau v Jeong, Sunam | 2-6,5-7 |
| Fed Cup, Groupe Mondial | 2018/02/10 05:55 | Lin Zhu v Jeong, Sunam | 4-6,7-5,6-1 |
| Fed Cup, Groupe Mondial | 2018/02/09 05:15 | Lertpitaksinchai, Nicha v Jeong, Sunam | 7-6,2-6,0-6 |
| Fed Cup, Groupe Mondial | 2018/02/08 04:30 | Nara, Kurumi v Jeong, Sunam | 6-3,6-0 |