| 2018 Fed Cup | 06/21 14:00 | - | Maria Jose Portillo Ramirez v Tangia Riley-Codrington | 6-0,6-0 | |
| ITF Women Sumter Qual | 06/16 14:00 | - | Olga Govortsova v Maria Jose Portillo Ramirez | View | |
| ITF Women Sumter | 06/13 18:15 | - | [448] Maria Jose Portillo Ramirez v Alize Lim [312] | 1-6,1-6 | |
| ITF Women Sumter Qual | 06/12 13:45 | - | Maria Jose Portillo Ramirez v Gianna Pielet | 6-2,6-3 | |
| ITF Women Sumter Qual | 06/11 13:00 | - | Maria Jose Portillo Ramirez v Peyton Stearns | 7-6,7-6 | |
| ITF Women Bethany Beach Qual | 06/05 13:10 | - | Maria Jose Portillo Ramirez v Elysia Bolton | 6-7,3-6 | |
| ITF Women Tacarigua | 05/12 15:00 | - | Maria Jose Portillo Ramirez v Andrea R Villarreal | 6-2,6-2 | |
| ITF Women Tacarigua | 05/11 17:10 | - | Maria Jose Portillo Ramirez v Csilla Fodor | 6-7,6-0,7-6 | |
| ITF Women Tacarigua | 05/10 15:00 | - | Emily Appleton v Maria Jose Portillo Ramirez | 4-6,4-6 | |
| ITF Women Tacarigua | 05/09 18:55 | - | Maria Jose Portillo Ramirez v Catherine Leduc | 6-4,6-2 | |
| ITF Women Pelham Qual | 04/09 15:00 | - | Maria Jose Portillo Ramirez v Andrea R Villarreal | 6-2,3-6,6-7 | |
| ITF Women Pelham Qual | 04/08 15:00 | - | Charity Johns v Maria Jose Portillo Ramirez | 0-6,0-6 | |
| ITF Women Irapuato | 03/13 22:20 | - | Maria Jose P Ramirez v Maria Sanchez | 1-6,1-6 | |
| ITF Women Campinas Qual | 03/05 14:50 | - | Stephanie Nemtsova v Maria Jose Portillo Ramirez | 6-2,6-3 | |
| ITF Women Campinas Qual | 03/04 14:00 | - | Marcela-Guimaraes Bueno v Maria Jose Portillo Ramirez | 2-6,1-6 | |
| ITF Women Campinas Qual | 03/03 14:00 | - | Leticia Giudici v Maria Jose Portillo Ramirez | 1-6,1-6 | |
| ITF Women Sao Paulo Qual | 02/25 13:00 | - | Eleni Kordolaimi v Maria Jose Portillo Ramirez | 7-5,6-4 | |
| ITF Women Sao Paulo Qual | 02/24 12:00 | - | Maria D R Vazquez v Maria Jose Portillo Ramirez | 3-6,4-6 | |
| ITF Women Curitiba Qual | 02/17 12:30 | - | Maria Jose Portillo Ramirez v Paula Ormaechea | 0-6,2-6 | |
| ITF Women Sharm El Sheikh | 01/29 08:00 | - | Shalimar Talbi v Maria Jose Portillo Ramirez | 6-2,6-4 | |
| ITF Women Sharm El Sheikh | 01/28 08:00 | - | Constanze Stepan v Maria Jose Portillo Ramirez | 1-6,2-6 | |
| ITF Women Sharm El Sheikh | 01/22 08:00 | - | Maria Jose Portillo Ramirez v Katyarina Paulenka | 3-6,0-6 | |
| ITF Women Sharm El Sheikh | 01/21 09:00 | - | Alexandra Riley v Maria Jose Portillo Ramirez | 4-6,3-6 | |
| ITF Women Sharm El Sheikh | 01/20 09:00 | - | Sofia Dmitrieva v Maria Jose Portillo Ramirez | 6-0,2-6,1-6 | |
| ITF Women Sharm El Sheikh | 01/17 10:40 | - | Lou Brouleau v Maria Jose Portillo Ramirez | 6-0,6-2 | |
| ITF Women Sharm El Sheikh | 01/14 10:00 | - | Maria Jose Portillo Ramirez v Angella Raman | 6-4,6-0 | |
| ITF Women Guayaquil | 12/06 15:10 | - | Agustina Chlpac v Maria Jose Portillo Ramirez | 6-3,6-3 | |
| ITF Women Guayaquil | 12/04 15:20 | - | Maria Jose Portillo Ramirez v Akilah James | 6-2,3-6,6-4 | |
| ITF Women Manta | 11/30 15:10 | - | Nika Kukharchuk v Maria Jose P Ramirez | 6-3,6-4 | |
| ITF Women Manta | 11/28 19:00 | - | Maria Jose P Ramirez v Tania Lea A Sanchez | 6-3,6-1 |