Stadium: Court 6 Round: 25
| ITF Women Villa del Dique | 2018/04/22 12:30 | Guimaraes Bueno, Flavia v Saguchi, Miyumi Milagros | 6-0,7-5 |
| ITF Women Villa Dolores | 2018/04/15 15:30 | Guimaraes Bueno, Flavia v Ferrero, Melina | 3-6,3-6 |
| ITF Women SJD Campos Qual | 2018/03/13 16:50 | Guimaraes Bueno, Flavia v Gatica, Barbara | 5-7,0-6 |
| ITF Women SJD Campos Qual | 2018/03/12 14:20 | Guimaraes Bueno, Flavia v Kokeladze, Kamilla | 6-4,6-3 |
| ITF Women SJD Campos Qual | 2018/03/11 14:00 | Guimaraes Bueno, Flavia v Martini, Raquel | 6-0,6-3 |
| ITF Women Campinas Qual | 2018/03/05 14:45 | Escauriza, Lara v Guimaraes Bueno, Flavia | 6-1,6-3 |
| ITF Women Campinas Qual | 2018/03/04 14:00 | Drozd Pereira, Erika v Guimaraes Bueno, Flavia | 0-6,6-3,4-6 |
| Sao Paulo, Singles Qualifying W-WITF-BRA-02A | 2018/02/25 14:30 | Guimaraes Bueno, Flavia v Petit, Stephanie Mariel | 3-6,2-6 |
| ITF Women Villa Dolores | 2018/04/16 12:30 | Jastrzebska, Paulina v Zanuttini, Eliana | 1-6,4-6 |
| ITF Women Villa Dolores | 2018/04/15 13:00 | Jastrzebska, Paulina v Neyra, Camila Antonella | 6-0,6-0 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/03/20 08:00 | Munozova, Anette v Jastrzebska, Paulina | 6-2,6-4 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/03/19 08:00 | Jastrzebska, Paulina v Linda Sevcikova | 4-6,7-5,6-2 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/03/18 08:00 | Jastrzebska, Paulina v de Santis, Elena | 6-2,6-0 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/03/14 10:30 | Burrage, Jodie Anna v Jastrzebska, Paulina | 6-3,6-0 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/03/12 08:30 | Jastrzebska, Paulina v Maria Paulina Perez Garcia | 6-7,0-6 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/03/11 10:30 | Jastrzebska, Paulina v Oliwia Szymczuch | 2-6,6-2,6-4 |