Stadium: Court 17 Round: 25 Ground: Clay
| ITF W15 Piracicaba | 2021/10/12 14:50 | Elysia Wan v Isabella Daher Vaz Castro | 6-2,6-1 |
| ITF W25 Aparecida De Goiania | 2021/11/08 12:00 | Miriana Tona v Maria L C Bloot | 6-1,6-0 |
| ITF W25 Guayaquil | 2021/10/27 19:45 | Jana Kolodynska v Miriana Tona | 7-5,4-6,6-3 |
| ITF W25 Guayaquil | 2021/10/25 17:10 | Fernanda Astete v Miriana Tona | 6-4,1-6,10-12 |
| ITF W25 Rio do Sul | 2021/10/20 12:00 | Katharina Gerlach v Miriana Tona | 6-4,6-1 |
| ITF W15 Piracicaba | 2021/10/17 13:30 | Luisa Meyer Auf Der Heide v Miriana Tona | 1-6,2-6 |
| ITF W15 Piracicaba | 2021/10/16 16:45 | Sabastiani Leon v Miriana Tona | 1-6,2-6 |
| ITF W15 Piracicaba | 2021/10/15 19:10 | Miriana Tona v Fernanda Astete | 6-1,6-1 |
| ITF W15 Piracicaba | 2021/10/14 22:40 | Miriana Tona v Ana Candiotto | 6-3,6-0 |