Stadium: Court 6 Round: 62 Ground: Synthetic outdoor
| ITF Women Amstelveen | 2018/07/12 10:25 | Marina Yudanov v Yukina Saigo | 6-2,6-4 |
| ITF Women Amstelveen | 2018/07/11 11:10 | Yukina Saigo v Stephanie Judith Visscher | 6-2,6-2 |
| ITF Women Den Haag | 2018/07/03 08:00 | Yukina Saigo v Julyette M J Steur | 2-6,4-6 |
| ITF Women Karuizawa | 2018/05/22 03:05 | Kanako Morisaki v Yukina Saigo | 4-6,6-3,6-2 |
| ITF Women Karuizawa Qual | 2018/05/21 02:55 | Yukina Saigo v Chihiro Takayama | 6-1,6-1 |
| ITF Women Kurume Qual | 2018/05/14 01:00 | Yukina Saigo v Sakura Hondo | 3-6,6-4,5-7 |
| ITF Women Kurume Qual | 2018/05/13 00:30 | Moyuka Uchijima v Yukina Saigo | 6-1,3-6,1-6 |
| ITF Women Fukuoka Qual | 2018/05/07 03:55 | Yukina Saigo v Erina Hayashi | 4-6,5-7 |
| ITF Women Kofu Qual | 2018/06/09 05:30 | Chinatsu Shimizu v Lisa-Marie Rioux | 5-7,3-6 |
| ITF Women Fukuoka Qual | 2018/05/07 01:00 | Olivia Tjandramulia v Chinatsu Shimizu | 7-5,6-3 |
| ITF Women Fukuoka Qual | 2018/05/06 02:50 | Michiru Furuya v Chinatsu Shimizu | 3-6,1-6 |
| ITF Women Gifu Qual | 2018/04/29 02:35 | Chinatsu Shimizu v Rika Fujiwara | 2-6,2-6 |
| ITF Women Osaka Qual | 2018/04/07 02:30 | Chinatsu Shimizu v Ramu Ueda | 1-6,4-6 |
| ITF Women Kofu Qual | 2018/03/24 03:00 | Chinatsu Shimizu v Mitsumi Kawasaki | 3-6,6-4,2-6 |
| ITF Women Toyota Qual | 2018/03/10 03:00 | Chinatsu Shimizu v Yuika Sano | 2-6,4-6 |
| ITF Women Hamamatsu Qual | 2017/10/17 01:00 | Beatrice Gumulya v Chinatsu Shimizu | 7-5,4-6,6-1 |