Stadion: Court 1 Round: 25
| ITF Damen - Brüssel - Qualifikation | 2018/07/14 09:00 | Mary Closs v Kristy Jorgensen | 6-2,1-6,2-6 |
| ITF Damen - Knokke | 2018/07/09 08:00 | Mary Closs v Anna Kubareva | 6-7,1-6 |
| ITF Damen - Baton Rouge - Qualifkation | 2018/06/17 14:00 | Connie Ma v Mary Closs | 6-2,7-5 |
| ITF Damen - Sumter - Qualifikation | 2018/06/10 13:00 | Abigail Forbes v Mary Closs | 6-3,6-3 |
| ITF Damen - Bethany Beach - Qualifikation | 2018/06/04 14:00 | Maegan Manasse v Mary Closs | 6-4,1-6,6-1 |
| ITF Damen - Osprey - Qualifikation | 2018/05/21 14:00 | Ksenia Laskutova v Mary Closs | 6-1,6-1 |
| ITF Damen - Charlottesville - Qualifikation | 2018/04/22 18:05 | Mary Closs v Marine Partaud | 2-6,2-6 |
| ITF Damen - Dothan - Qualifikation | 2018/04/15 20:50 | Katherine Sebov v Mary Closs | 6-2,6-3 |