Stadium: Court 11 Round: 26
| ITF Women SJD Campos | 2018/03/14 15:30 | Rebeca Pereira v Akiko Okuda | 1-6,6-7 |
| ITF Women SJD Campos Qual | 2018/03/10 16:00 | Akiko Okuda v Maria Virginia Bosch | 6-2,6-0 |
| ITF Women Campinas Qual | 2018/03/05 13:00 | Carla Lucero v Akiko Okuda | 6-2,6-2 |
| ITF Women Campinas Qual | 2018/03/04 14:00 | Althea Hudson v Akiko Okuda | 0-6,0-6 |
| ITF Women Sao Paulo Qual | 2018/02/24 12:00 | Akiko Okuda v Camila Giangreco Campiz | 2-6,6-3,4-6 |
| ITF Women Curitiba Qual | 2018/02/17 14:30 | Akiko Okuda v Madison Bourguignon | 2-6,1-6 |
| ITF Women Petit-Bourg | 2018/01/15 16:10 | Akiko Okuda v Kamilla Kokeladze | 5-7,6-7 |
| ITF Women Fort-De-France | 2018/01/08 13:30 | Akiko Okuda v Alana Smith | 3-6,2-6 |
| 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 |
| ITF Women Santa Cruz | 2017/12/13 21:30 | Marcela-Guimaraes Bueno v Stephanie Mariel Petit | 3-6,1-6 |