Stadium: Court 8 Round: 25
| Campinas, Singles W-WITF-BRA-03A | 2018/03/06 14:00 | Victoria Bosio v Petit, Stephanie Mariel | 6-4,6-3 |
| Sao Paulo, Singles Qualifying W-WITF-BRA-02A | 2018/02/26 16:25 | Gabriela Ce v Petit, Stephanie Mariel | 6-4,6-1 |
| Sao Paulo, Singles Qualifying W-WITF-BRA-02A | 2018/02/25 14:30 | Guimaraes Bueno, Flavia v Petit, Stephanie Mariel | 3-6,2-6 |
| Sao Paulo, Singles Qualifying W-WITF-BRA-02A | 2018/02/24 15:30 | Ferreira, Nicolly v Petit, Stephanie Mariel | 0-6,1-6 |
| Fed Cup, Groupe Mondial | 2018/02/10 18:30 | Maria Paulina Perez Garcia v Petit, Stephanie Mariel | 4-6,4-6 |
| ITF Women Santa Cruz | 2017/12/14 21:30 | Kurata, Nathaly v Petit, Stephanie Mariel | 2-6,6-4,7-5 |
| ITF Women Santa Cruz | 2017/12/13 21:30 | Marcela G. Bueno v Petit, Stephanie Mariel | 3-6,1-5 |
| ITF Women Santa Cruz | 2017/12/13 21:30 | Bueno, Marcela-Guimaraes v Petit, Stephanie Mariel | 3-6,1-6 |