Stadium: Court 17 Round: 54 Ground: Clay
| 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 |
| ITF W15 Piracicaba | 2021/10/13 15:25 | Heydi Doldan v Aglaya Zaynieva | 6-2,6-3 |
| ITF W25 Medellin | 2021/09/13 17:30 | Heydi Doldan v Daniela Carrillo | 0-6,3-6 |
| ITF W15 Ibague | 2021/09/07 16:30 | Antonia Samudio v Heydi Doldan | 6-1,6-2 |
| ITF W25 Cordoba | 2021/04/06 12:00 | Maria F Herazo Gonzalez v Heydi Doldan | 7-5,6-1 |
| ITF W25 Cordoba | 2021/04/05 14:00 | Martina B-R Santander v Heydi Doldan | 3-6,6-7 |
| ITF W25 Cordoba | 2021/04/04 14:30 | Pilar Traiber v Heydi Doldan | 3-6,1-6 |