Stadium: Cancha 7 Round: 25 Ground: Clay
| ITF W15 Curitiba | 2021/11/29 14:50 | Nicolly Ferreira v Catarina M I Melleiro Junior | 6-4,6-3 |
| ITF W15 Curitiba | 2021/12/02 12:55 | Heydi Doldan v Nathaly Kurata | 0-6,1-6 |
| ITF W60 Brasilia | 2021/11/22 14:25 | Lara Escauriza v Heydi Doldan | 6-0,6-1 |
| ITF W60 Brasilia | 2021/11/21 17:40 | Giulia Pereira De Aguiar v Heydi Doldan | 3-6,1-6 |
| ITF W25 Aparecida De Goiania | 2021/11/11 14:00 | Panna Udvardy v Heydi Doldan | 6-0,6-0 |
| ITF W25 Aparecida De Goiania | 2021/11/10 12:00 | Mariana Galvao Borges v Heydi Doldan | 0-6,0-6 |
| ITF W25 Aparecida De Goiania | 2021/11/08 12:00 | Heydi Doldan v Luiza Caixeta Parreira | 6-1,6-0 |
| ITF W25 Rio do Sul | 2021/10/20 12:00 | Maria Eduarda Lages v Heydi Doldan | 6-3,6-1 |
| ITF W15 Piracicaba | 2021/10/14 13:30 | Victoria Bosio v Heydi Doldan | 6-1,6-3 |