Stadium: Quadra 5 Round: 25 Ground: Clay
| ITF W60 - Brasilia | 2021/11/25 12:50 | Noelia Zeballos v Maria Lota Kaul | 0-6,4-6 |
| ITF W60 - Brasilia | 2021/11/23 16:50 | Noelia Zeballos v Dasha Ivanova | 6-2,5-7,6-3 |
| ITF W60 - Brasilia | 2021/11/22 13:20 | Noelia Zeballos v Emily Welker | 7-5,6-7,8-10 |
| ITF W60 - Brasilia | 2021/11/21 14:25 | Noelia Zeballos v Elysia Wan | 6-2,6-3 |
| Billie Jean King Cup | 2021/10/30 15:20 | Kirsten-Andrea Weedon v Noelia Zeballos | 7-5,6-3 |
| Billie Jean King Cup | 2021/10/29 14:40 | Noelia Zeballos v Paola Bou | 6-1,6-1 |
| Billie Jean King Cup | 2021/10/28 15:45 | Noelia Zeballos v Alejandra Obando | 6-0,6-0 |
| Billie Jean King Cup | 2021/10/27 15:30 | Noelia Zeballos v Hannah Chambers | 6-2,6-1 |
| ITF W60 - Brasilia | 2021/11/21 17:10 | Sabastiani Leon v Pilar A Harper | 6-0,6-3 |
| ITF W15 - Castellón | 2021/11/01 11:00 | Maria Jose Zehnder v Pilar A Harper | 5-7,6-0,10-7 |
| ITF W25 - Leiria | 2021/09/06 10:00 | Matilde Jorge v Pilar A Harper | 6-1,6-2 |
| ITF - W15 - Monastir | 2021/04/25 14:00 | Irys Ekani v Pilar A Harper | 7-5,6-0 |
| ITF - W15 - Monastir | 2021/04/19 09:00 | Pilar A Harper v Nicole Gadient | 3-6,2-6 |
| ITF - W15 - Monastir | 2021/04/11 12:00 | Pilar A Harper v Sopiko Tsitskishvili | 3-6,2-6 |
| ITF W15 - Buenos Aires | 2019/09/17 14:00 | Alija Merdeeva v Pilar A Harper | 6-0,7-5 |
| ITF W15 - Buenos Aires | 2019/09/16 13:00 | Julia Klimovicz v Pilar A Harper | 1-6,0-6 |