Stadium: Court 13 Round: 25 Ground: Clay
| ITF Women Kyoto | 2018/09/04 01:00 | Rio Kitagawa v Ikumi Yamazaki | 3-6,1-6 |
| ITF Women Nanao | 2018/08/27 03:50 | Yidi Yang v Rio Kitagawa | 6-1,6-2 |
| ITF Women Gimcheon | 2018/08/23 03:50 | Da Ye Kim v Rio Kitagawa | 6-4,6-2 |
| ITF Women Gimcheon | 2018/08/15 01:00 | Rio Kitagawa v Ramya Natarajan | 1-6,1-6 |
| ITF Women Taipei | 2018/07/23 03:00 | Rio Kitagawa v Ting-Pei Chang | 6-2,4-6,4-6 |
| ITF Women Jakarta | 2018/07/17 07:00 | Zhibek Kulambayeva v Rio Kitagawa | 6-2,6-1 |
| ITF Women Solo | 2018/07/10 06:00 | Zhima Du v Rio Kitagawa | 6-3,6-2 |
| ITF Women Daegu Qual | 2018/06/19 01:00 | Ayaka Okuno v Rio Kitagawa | 6-0,7-6 |
| ITF Women Hilton Head | 2018/09/24 13:00 | Justina Mikulskyte v Ariana Arseneault | 6-4,2-6,6-3 |
| ITF Women Warsaw Qual | 2018/08/06 12:00 | Justina Mikulskyte v Ilona Kremen | 0-6,4-6 |
| ITF Women Warsaw Qual | 2018/08/05 13:00 | Valeriya Zeleva v Justina Mikulskyte | 2-6,7-5,1-6 |
| ITF Women Warsaw Qual | 2018/08/04 10:00 | Agata Bachanek v Justina Mikulskyte | 2-6,7-6,4-6 |
| ITF Women Knokke | 2018/07/12 10:00 | Maryna Chernyshova v Justina Mikulskyte | 6-3,6-3 |
| ITF Women Knokke | 2018/07/11 10:30 | Eva Marie Voracek v Justina Mikulskyte | 6-7,1-6 |
| ITF Women Knokke | 2018/07/09 10:00 | Justina Mikulskyte v Helene Pellicano | 5-7,6-1,6-0 |
| ITF Women Knokke | 2018/07/08 10:00 | Anastasia Veselova v Justina Mikulskyte | 2-6,2-6 |