| ITF W15 Cancún | 05/17 13:30 | 27 | Maria Jose P Ramirez v Kirsten-Andrea Weedon | 2-6,2-6 | |
| ITF W15 Cancún | 05/16 13:30 | 26 | Maria Jose P Ramirez v Dasha Kourkina | Retired | |
| ITF W15 Cancún | 05/14 13:30 | 25 | Maria Jose P Ramirez v Erika Sandor-Zur | 6-0,6-0 | |
| ITF W15 Cancún | 05/12 15:00 | 29 | Marcela Zacarias v Maria Jose P Ramirez | 6-3,6-1 | |
| ITF W15 Cancún | 05/11 14:00 | 28 | Alexandra Vagramov v Maria Jose P Ramirez | 3-6,3-6 | |
| ITF W15 Cancún | 05/10 15:00 | 27 | Andrea R Villarreal v Maria Jose P Ramirez | 7-5,4-6,6-7 | |
| ITF W15 Cancún | 05/09 14:00 | 26 | Dasha Kourkina v Maria Jose P Ramirez | 1-6,3-6 | |
| ITF W15 Cancún | 05/07 15:50 | 25 | Fatima Y G Martinez v Maria Jose P Ramirez | 1-6,1-6 | |
| ITF W15 Cancún | 04/19 14:00 | 27 | [488] Maria Jose P Ramirez v Marcela Zacarias [420] | 2-6,1-6 | |
| ITF W15 Cancún | 04/18 15:45 | 26 | Maria Jose P Ramirez v Shelly Bereznyak | 6-1,6-0 | |
| ITF W15 Cancún | 04/17 14:00 | 25 | Maria Jose P Ramirez v Angeles M-Barranquero | 6-3,6-7,6-3 | |
| ITF W15 Cancún | 04/13 15:00 | 28 | Maria Jose Portillo Ramirez v Natsumi Kawaguchi | 6-4,3-6,6-7 | |
| ITF W15 Cancún | 04/12 14:30 | 27 | Maria Jose Portillo Ramirez v Maya Tahan | 6-4,6-3 | |
| ITF W15 Cancún | 04/11 16:00 | 26 | Maria Jose Portillo Ramirez v Stephanie Kent | 6-4,7-5 | |
| ITF W15 Cancún | 04/10 17:20 | 25 | Maria Jose Portillo Ramirez v Yureni Reyna Gomez | 6-0,6-0 | |
| ITF W15 Cancún | 03/29 15:55 | 27 | [469] Maria Jose Portillo Ramirez v Montserrat Gonzalez [455] | 5-7,1-6 | |
| ITF W15 Cancún | 03/28 14:00 | 26 | Maria Jose Portillo Ramirez v Josephine Boualem | 1-6,7-6,6-2 | |
| ITF W15 Cancún | 03/27 18:10 | 25 | Maria Jose Portillo Ramirez v Olga Parres Azcoitia | 6-1,6-4 | |
| ITF W15 Cancún | 03/19 19:00 | 25 | Dominique Schaefer v Maria Jose Portillo Ramirez | 2-6,7-6,7-5 | |
| ITF W15 Cancún | 03/12 15:55 | 25 | Maria Jose P Ramirez v Lea Ma | 2-6,4-6 | |
| ITF W25 Irapuato | 03/04 19:30 | 45 | Andrea Gamiz v Maria Jose Portillo Ramirez | 6-2,7-5 | |
| WTA Acapulco | 02/23 23:40 | 45 | [148] Conny Perrin v Maria Jose Portillo Ramirez [478] | 6-1,6-1 | |
| 2019 Fed Cup | 02/09 15:00 | 29 | [478] Maria Jose P Ramirez v Alexa Guarachi [394] | 3-6,5-7 | |
| ITF Norman - Femenino | 11/11 16:00 | 62 | Maria Jose Portillo Ramirez v Tiphanie Lemaitre | 6-7,6-1,2-6 | |
| ITF Norman - Femenino | 11/10 18:30 | 62 | Maria Jose Portillo Ramirez v Holly Hutchinson | 6-2,6-1 | |
| ITF Toronto - Femenino | 10/28 14:00 | 54 | Joelle Kissell v Maria Jose Portillo Ramirez | 6-1,6-2 | |
| ITF Toronto - Femenino | 10/27 15:50 | 54 | Maria Jose Portillo Ramirez v Safiya Carrington | 5-7,7-6,7-5 | |
| ITF Lagos - Femenino | 10/09 10:30 | 25 | Conny Perrin v Maria Jose Portillo Ramirez | 6-3,6-2 | |
| ITF Lagos - Femenino | 10/03 12:00 | 26 | Maria Jose P Ramirez v Victoria Bosio | 6-7,3-6 | |
| ITF Lagos - Femenino | 10/01 12:05 | 25 | Fiona Codino v Maria Jose P Ramirez | 5-7,6-3,5-7 |