Stadium: C Round: 62
| 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 Naomi Cheong | 6-0,6-0 |
| ITF Women Yokohama | 2018/03/09 05:30 | Momoko Kobori v Veronika Kudermetova | 6-2,3-6,2-6 |
| ITF Women Yokohama | 2018/03/08 04:50 | Eri Hozumi v Momoko Kobori | 7-6,3-6,4-6 |
| ITF Women Yokohama | 2018/03/07 03:20 | Momoko Kobori v Chloe Paquet | 2-6,6-1,6-4 |
| ITF Women Yokohama Qual | 2018/03/05 01:00 | Momoko Kobori v Naomi Cheong | 6-4,6-3 |
| ITF Women Burnie Qual | 2018/01/29 00:00 | Momoko Kobori v Anastasia Pivovarova | 0-6,3-6 |
| ITF Women Burnie Qual | 2018/01/28 05:00 | Momoko Kobori v Nagi Hanatani | 6-0,6-4 |
| ITF Women Toyota Qual | 2018/03/11 01:00 | Yuki Kristina Chiang v Ya-Hsuan Lee | 1-6,0-6 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | So-Ra Lee v Ya-Hsuan Lee | 6-7,3-6 |
| ITF Women Yokohama | 2018/03/07 01:00 | Harriet Dart v Ya-Hsuan Lee | 6-1,6-0 |
| ITF Women Yokohama Qual | 2018/03/06 01:00 | Akiko Omae v Ya-Hsuan Lee | 7-5,6-7,4-6 |
| ITF Women Yokohama Qual | 2018/03/04 07:00 | Ayaka Okuno v Ya-Hsuan Lee | 4-6,4-6 |
| 2018 Fed Cup | 2018/02/07 04:30 | Ya-Hsuan Lee v Sunam Jeong | 3-6,3-6 |
| WTA Taipei | 2018/01/29 07:30 | Ya-Hsuan Lee v Kai-Chen Chang | 5-7,2-6 |
| ITF Women Hong Kong | 2018/01/06 02:00 | Ya-Hsuan Lee v Hiroko Kuwata | 6-4,6-4 |