Stadium: Court 9 Round: 25
| Karuizawa, Singles W-WITF-JPN-10A | 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 Takayama, Chihiro | 6-1,6-1 |
| ITF Women Kurume Qual | 2018/05/14 01:00 | Yukina Saigo v Hondo, Sakura | 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 Fukuoka Qual | 2018/05/06 04:30 | Yukina Saigo v Imamura, Nagisa | 7-5,6-4 |
| ITF Women Osaka Qual | 2018/04/09 03:05 | Ya-Hsuan Lee v Yukina Saigo | 6-2,6-2 |
| ITF Women Osaka Qual | 2018/04/08 03:30 | Haruna Arakawa v Yukina Saigo | 5-7,3-6 |
| ITF Women Alkmaar | 2018/06/29 09:00 | Hendler, Tamaryn v Steur, Julyette Maria Josephine | 6-2,7-5 |
| ITF Women Alkmaar | 2018/06/28 10:40 | Wensveen, Sem v Steur, Julyette Maria Josephine | 3-6,3-6 |
| ITF Women Alkmaar | 2018/06/27 09:00 | Madison Bourguignon v Steur, Julyette Maria Josephine | 2-6,3-6 |
| ITF Women Kaltenkirchen | 2018/06/21 08:30 | Anna Gabric v Steur, Julyette Maria Josephine | 6-2,6-1 |
| ITF Women Kaltenkirchen | 2018/06/19 09:00 | Arina Gabriela Vasilescu v Steur, Julyette Maria Josephine | 6-3,1-6,5-7 |
| ITF Women Hammamet | 2018/05/25 09:00 | Steur, Julyette Maria Josephine v Tayisiya Morderger | 3-6,6-7 |
| ITF Women Hammamet | 2018/05/24 11:20 | Steur, Julyette Maria Josephine v Brouleau, Lou | 7-6,6-7,6-0 |
| ITF Women Hammamet | 2018/05/22 09:30 | Steur, Julyette Maria Josephine v Stojanovic, Jelena | 6-2,6-0 |