Stadium: Court 11 Round: 27
| ITF Women SJD Campos Qual | 2018/03/15 14:00 | Fernanda Brito v Dominique Schaefer | 1-6,5-7 |
| ITF Women SJD Campos | 2018/03/14 14:00 | Dominique Schaefer v Eduarda Piai | 6-2,7-6 |
| ITF Women Campinas | 2018/03/08 15:25 | Dominique Schaefer v Eduarda Piai | 3-6,6-2,4-6 |
| ITF Women Campinas | 2018/03/07 14:00 | Chieh-Yu Hsu v Dominique Schaefer | 1-6,3-6 |
| ITF Women Campinas Qual | 2018/03/05 18:35 | Dominique Schaefer v Victoria Ariadna Beccio | 6-1,6-0 |
| ITF Women Campinas Qual | 2018/03/04 14:00 | Dominique Schaefer v Kamilla Kokeladze | 6-0,6-1 |
| ITF Women Sao Paulo Qual | 2018/02/24 12:00 | Dominique Schaefer v Mirjam Bjorklund | 3-6,6-7 |
| ITF Women Surprise Qual | 2018/02/11 17:00 | Dominique Schaefer v Caroline Werner | 4-6,0-6 |
| ITF Women SJD Campos | 2018/03/15 17:30 | Akiko Okuda v Stephanie Mariel Petit | 1-6,2-6 |
| ITF Women SJD Campos | 2018/03/14 22:30 | Marina Figueiredo v Stephanie Mariel Petit | 2-6,1-6 |
| ITF Women Campinas | 2018/03/06 14:00 | Victoria Bosio v Stephanie Mariel Petit | 6-4,6-3 |
| ITF Women Sao Paulo Qual | 2018/02/26 16:25 | Gabriela Ce v Stephanie Mariel Petit | 6-4,6-1 |
| ITF Women Sao Paulo Qual | 2018/02/25 14:30 | Flavia Guimaraes Bueno v Stephanie Mariel Petit | 3-6,2-6 |
| ITF Women Sao Paulo Qual | 2018/02/24 15:30 | Nicolly Ferreira v Stephanie Mariel Petit | 0-6,1-6 |
| 2018 Fed Cup | 2018/02/10 18:30 | Maria Paulina Perez Garcia v Stephanie Mariel Petit | 4-6,4-6 |
| ITF Women Santa Cruz | 2017/12/14 21:30 | Nathaly Kurata v Stephanie Mariel Petit | 2-6,6-4,7-5 |