Ground: Clay
| ITF Women Santa Cruz | 2017/12/12 21:30 | Lara Escauriza v Stephanie Mariel Petit | 2-6,4-6 |
| ITF Women Santiago | 2017/12/05 19:05 | Maria F Herazo Gonzalez v Stephanie Mariel Petit | 6-1,6-4 |
| ITF Women Santiago | 2017/11/30 14:30 | Chiara Scholl v Stephanie Mariel Petit | 6-1,6-2 |
| ITF Women Santiago | 2017/11/29 17:50 | Ivania Martinich v Stephanie Mariel Petit | 2-6,0-6 |
| ITF Women Santiago | 2017/11/27 16:30 | Pauline Wuarin v Stephanie Mariel Petit | 1-6,0-6 |
| ITF Women Encarnacion | 2017/11/10 13:00 | Stephanie Mariel Petit v Nathaly Kurata | 6-2,4-6,2-6 |
| ITF Women Encarnacion | 2017/11/09 13:00 | Ivania Martinich v Stephanie Mariel Petit | 4-6,3-6 |
| ITF Women Encarnacion | 2017/11/08 14:15 | Kelly Williford v Stephanie Mariel Petit | 1-6,1-6 |