Stadium: Court 2 Round: 62
| 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 01:00 | Lykina, Ksenia v Chiang, Yuki Kristina | 7-5,7-5 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/03/25 01:00 | Ying Zhang v Chiang, Yuki Kristina | 6-1,3-6,1-6 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/03/24 00:30 | Aoiko Goto v Chiang, Yuki Kristina | 1-6,0-6 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/22 03:00 | Chiang, Yuki Kristina v Okuno, Ayaka | 6-1,5-7,1-6 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/20 01:00 | Na-Lae Han v Chiang, Yuki Kristina | 3-6,4-6 |
| ITF Women Toyota Qual | 2018/03/11 01:00 | Chiang, Yuki Kristina v Ya-Hsuan Lee | 1-6,0-6 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | Dabin Kim v Chiang, Yuki Kristina | 2-6,1-6 |
| Kofu, Singles Qualifying W-WITF-JPN-02A | 2018/03/24 03:00 | Erika Sema v Kato, Kei | 4-6,6-3,6-0 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/19 01:00 | Mayuka Aikawa v Kato, Kei | 6-3,3-6,6-1 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/18 01:00 | Himeno Sakatsume v Kato, Kei | 3-6,3-6 |
| Nishi-Tama, Singles W-WITF-JPN-01A | 2018/03/17 04:00 | Kato, Kei v Ayumi Koshiishi | 7-5,6-4 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | Shiho Akita v Kato, Kei | 6-0,6-3 |
| ITF Women Tokyo Qual | 2017/11/04 01:00 | Kato, Kei v Tori Kinard | 7-6,3-6,1-6 |
| ITF Women Hamamatsu Qual | 2017/10/17 06:00 | Kato, Kei v Kajuru, Ange Oby | 1-6,4-6 |
| ITF Women Tsukuba Qual | 2017/08/20 00:30 | Kato, Kei v Yukina Saigo | 1-6,4-6 |