Stadium: Court 4 Round: 27 Ground: Clay
| ITF Women Antalya | 2018/04/26 09:00 | Marianna Zakarlyuk v Haruna Arakawa | 2-6,6-2,2-6 |
| ITF Women Antalya | 2018/04/24 09:25 | Haruna Arakawa v Gyulnara Nazarova | 6-1,7-5 |
| ITF Women Antalya | 2018/04/17 09:15 | Julia Stamatova v Haruna Arakawa | 6-4,6-2 |
| ITF Women Osaka Qual | 2018/04/08 03:30 | Haruna Arakawa v Yukina Saigo | 5-7,3-6 |
| ITF Women Osaka Qual | 2018/04/08 02:00 | Haruna Arakawa v Ying Zhang | 7-5,6-1 |
| ITF Women Kashiwa | 2018/04/03 01:00 | Lin Zhu v Haruna Arakawa | 6-0,6-1 |
| ITF Women Kofu Qual | 2018/03/24 00:30 | Ayumi Koshiishi v Haruna Arakawa | 7-5,6-4 |
| ITF Women Nishi-Tama | 2018/03/20 04:50 | Haruna Arakawa v Kanako Morisaki | 5-7,2-6 |
| ITF Women Antalya | 2018/04/24 07:30 | Ekaterina Ovcharenko v Camila Giangreco Campiz | 4-6,1-6 |
| ITF Women SJD Campos | 2018/03/15 14:00 | Camila Giangreco Campiz v Thaisa Grana Pedretti | 7-6,2-6,3-6 |
| ITF Women SJD Campos | 2018/03/13 18:00 | Camila Giangreco Campiz v Alice Garcia | 6-1,6-0 |
| ITF Women Campinas | 2018/03/06 15:30 | Camila Giangreco Campiz v Alice Rame | 6-7,0-6 |
| ITF Women Sao Paulo | 2018/02/28 14:20 | Mariana Duque Marino v Camila Giangreco Campiz | 6-4,4-6,6-1 |
| ITF Women Sao Paulo Qual | 2018/02/26 13:30 | Nathaly Kurata v Camila Giangreco Campiz | 4-6,7-5,6-2 |
| ITF Women Sao Paulo Qual | 2018/02/25 14:30 | Giovanna Tomita v Camila Giangreco Campiz | 4-6,1-6 |
| ITF Women Sao Paulo Qual | 2018/02/24 12:00 | Akiko Okuda v Camila Giangreco Campiz | 2-6,6-3,4-6 |