| ITF Women Sumter Qual | 2018/06/10 13:00 | Olga Govortsova v Connie Ma | 6-3,6-3 |
| ITF Women Sumter Qual | 2018/06/10 13:00 | Abigail Forbes v Mary Closs | 6-3,6-3 |
| ITF Women Bethany Beach Qual | 2018/06/04 14:00 | Maegan Manasse v Mary Closs | 6-4,1-6,6-1 |
| ITF Women Osprey Qual | 2018/05/21 14:00 | Ksenia Laskutova v Mary Closs | 6-1,6-1 |
| ITF Women Charlottesville Qual | 2018/04/22 18:05 | Mary Closs v Marine Partaud | 2-6,2-6 |
| ITF Women Dothan Qual | 2018/04/15 20:50 | Katherine Sebov v Mary Closs | 6-2,6-3 |
| ITF Women Pelham Qual | 2018/04/08 15:00 | Mary Closs v Akiko Okuda | 6-4,3-6,3-6 |
| ITF Women Tel Aviv | 2018/03/18 12:00 | Mary Closs v Danielle Daley | 2-6,4-6 |
| ITF Women Ramat Hasharon | 2018/03/12 07:30 | Tamara Barad Itzhaki v Mary Closs | 7-6,6-2 |