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