Estádio: Centre Court Round: 54 Ground: Clay
| ITF - W60 Brasília | 2021/11/22 14:55 | Merel Hoedt v Miriana Tona | 3-6,6-1,10-7 |
| ITF - W60 Brasília | 2021/11/21 16:50 | Vivian Mayumi Toma v Miriana Tona | 0-6,0-6 |
| ITF - W25 Aparecida de Goiânia | 2021/11/11 12:00 | Miriana Tona v Victoria Jimenez Kasintseva | 0-6,3-6 |
| ITF - W25 Aparecida de Goiânia | 2021/11/09 13:55 | Isabella Daher Vaz Castro v Miriana Tona | 0-6,1-6 |
| ITF - W25 Aparecida de Goiânia | 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 - W25 Blumenau-Gaspar | 2022/01/09 13:00 | Julia B B Borddignon v Giovanna Gomes Ferreira | 6-3,7-6 |