| ITF Women Sumter | 2018/06/13 18:15 | Maria Jose Portillo Ramirez v Alize Lim | 1-6,1-6 |
| ITF Women Sumter Qual | 2018/06/12 13:00 | Maria Jose Portillo Ramirez v Gianna Pielet | 6-2,6-3 |
| ITF Women Sumter Qual | 2018/06/11 13:00 | Maria Jose Portillo Ramirez v Peyton Stearns | 7-6,7-6 |
| ITF Women Sumter Qual | 2018/06/10 13:00 | Maria Jose Portillo Ramirez v Savannah Broadus | 1-6,6-4,6-4 |
| ITF Women Bethany Beach Qual | 2018/06/05 13:00 | Maria Jose Portillo Ramirez v Elysia Bolton | 6-7,3-6 |
| ITF Women Tacarigua | 2018/05/12 15:00 | Maria Jose Portillo Ramirez v Andrea R Villarreal | 6-2,6-2 |
| ITF Women Tacarigua | 2018/05/11 17:00 | Maria Jose Portillo Ramirez v Csilla Fodor | 6-7,6-0,7-6 |
| ITF Women Tacarigua | 2018/05/10 15:00 | Emily Appleton v Maria Jose Portillo Ramirez | 4-6,4-6 |