Stadium: Court 6 Round: 25 Ground: Clay
| ITF Women Hammamet | 2018/05/27 12:00 | Maria Vittoria Viviani v Brittany Collens | 6-0,6-0 |
| ITF Women Hammamet | 2018/05/22 09:30 | Brittany Collens v Anna Siskova | 0-6,1-6 |
| ITF Women Hammamet | 2018/05/19 10:00 | Brittany Collens v Sri Vaishnavi Peddi Reddy | 6-4,6-2 |
| ITF Women Pelham Qual | 2018/04/08 15:00 | Brittany Collens v Rachel May Pierson | 2-6,3-6 |
| ITF Women Jackson Qual | 2018/04/02 18:00 | Brittany Collens v Lauren Marker | 2-6,0-6 |
| ITF Women Jackson Qual | 2018/04/01 19:30 | Brittany Collens v Julia Fisch | 6-4,3-6,6-3 |
| ITF Women Sharm El Sheikh | 2018/02/10 08:00 | Brittany Collens v Anastasiia Poplavska | 2-6,2-6 |
| ITF Women Sharm El Sheikh | 2018/02/06 08:00 | Brittany Collens v Alise Cernecka | 3-6,3-6 |
| ITF Women Hammamet | 2018/05/24 11:15 | Petra Januskova v Seira Shimizu | 6-1,6-3 |
| ITF Women Hammamet | 2018/05/22 09:30 | Seira Shimizu v Yana Morderger | 6-4,3-6,6-3 |
| ITF Women Hammamet | 2018/05/19 10:00 | Adithya Karunaratne v Seira Shimizu | 6-7,6-1,4-6 |
| ITF Women Hammamet | 2018/05/13 09:00 | Seira Shimizu v Lucie Wargnier | 0-6,0-6 |
| ITF Women Antalya | 2016/02/24 10:10 | Seira Shimizu v Alexandra Perper | 4-6,1-6 |
| ITF Women Sharm El Sheikh | 2015/08/12 14:30 | Jenny Claffey v Seira Shimizu | 6-0,6-1 |
| ITF Women Sharm El Sheikh | 2015/08/06 14:30 | Seira Shimizu v Kseniia Bekker | 6-3,3-6,2-6 |
| ITF Women Sharm El Sheikh | 2015/08/05 14:30 | Seira Shimizu v Alina Lazareva | 6-2,6-0 |