stadio: Court 2 Round: 27 Ground: Clay
| ITF Femminile San Paolo | 2017/03/07 17:05 | Thaisa Grana Pedretti v Guillermina Naya | 6-2,6-2 |
| ITF W15 Buenos Aires | 2019/09/12 12:00 | Julieta Lara Estable v Guillermina Naya | 5-7,3-6 |
| ITF W15 Buenos Aires | 2019/09/11 12:00 | Camila A Neyra v Guillermina Naya | 2-6,2-6 |
| ITF femminile Città del Messico | 2018/10/30 18:45 | Guillermina Naya v Raphaelle Lacasse | 4-6,7-5,3-6 |
| ITF Femminile Charleston | 2018/10/01 14:30 | Natasha Subhash v Guillermina Naya | 6-4,6-4 |
| ITF Femminile Hilton Head | 2018/09/25 14:30 | Guillermina Naya v Michaela Bayerlova | 6-1,2-6,5-7 |
| ITF femminile Marbella | 2018/09/04 08:00 | Guillermina Naya v Victoria Mikhaylova | 1-6,3-6 |
| ITF Femminile Hammamet | 2018/03/15 10:55 | Julia Stamatova v Guillermina Naya | 6-3,7-5 |
| ITF Femminile Hammamet | 2018/03/13 12:00 | Guillermina Naya v Federica Arcidiacono | 4-6,6-3,6-3 |
| ITF W15 Buenos Aires | 2019/09/12 14:10 | Victoria Ariadna Beccio v Thaisa Grana Pedretti | 1-6,0-6 |
| ITF W15 Buenos Aires | 2019/09/11 14:10 | Delfina Glorioso v Thaisa Grana Pedretti | 2-6,2-6 |
| ITF W25 Guayaquil | 2019/08/22 15:00 | Charlotte Roemer v Thaisa Grana Pedretti | 6-1,6-3 |
| ITF W25 Guayaquil | 2019/08/20 17:30 | Sofia Sewing v Thaisa Grana Pedretti | 2-6,0-6 |
| ITF W15 Cancun | 2019/08/03 13:30 | Thaisa Grana Pedretti v Anhzelika Isaeva | 6-3,6-1 |
| ITF W15 Cancun | 2019/08/02 13:30 | Elle Christensen v Thaisa Grana Pedretti | 2-6,0-6 |
| ITF W15 Cancun | 2019/08/01 18:45 | Natalie Johnson v Thaisa Grana Pedretti | 4-6,6-3,2-6 |
| ITF W15 Cancun | 2019/07/31 13:30 | Maria Gomez v Thaisa Grana Pedretti | 0-6,0-6 |