Stadium: Court 2 Round: 54
| ITF Women Guayaquil | 2018/08/06 15:00 | Marcela-Guimaraes Bueno v Anais Defossez | 2-6,3-6 |
| ITF Women Guayaquil | 2018/08/05 15:00 | Alexis Jones v Marcela-Guimaraes Bueno | 4-6,2-6 |
| ITF Women Villa del Dique | 2018/04/22 12:30 | Erika Drozd Pereira v Marcela-Guimaraes Bueno | 2-6,7-5,6-2 |
| ITF Women Villa del Dique | 2018/04/21 15:00 | Marcela-Guimaraes Bueno v Maria P Sellart | 6-3,6-2 |
| ITF Women Villa Dolores | 2018/04/14 12:00 | Marcela-Guimaraes Bueno v Delfina Glorioso | 6-2,2-6,3-6 |
| ITF Women SJD Campos Qual | 2018/03/12 13:00 | Stephanie Nemtsova v Marcela-Guimaraes Bueno | 6-3,6-0 |
| ITF Women SJD Campos Qual | 2018/03/11 14:00 | Caroline Furlaneto v Marcela-Guimaraes Bueno | 5-7,6-4,3-6 |
| ITF Women Campinas Qual | 2018/03/04 14:00 | Marcela-Guimaraes Bueno v Maria Jose Portillo Ramirez | 2-6,1-6 |
| ITF Women Guayaquil | 2018/08/08 15:00 | Fernanda Brito v Fernanda Labrana | 6-4,6-1 |
| ITF Women Guayaquil | 2018/08/06 16:50 | Fernanda Labrana v Larissa R De Souza | 6-0,6-0 |