| ITF W25 El Espinar | 07/25 07:50 | 25 | Astigarraga Harper, Pilar v Paula Arias Manjon | 0-6,1-6 | |
| ITF W25 Don Benito | 07/09 07:00 | 44 | Astigarraga Harper, Pilar v Elizabeth Jurna | 3-6,3-6 | |
| ITF W25 Cantanhede | 07/02 09:30 | 54 | Luana Plaza Araujo v Astigarraga Harper, Pilar | 6-0,7-6 | |
| UTR Series NIT Women | 05/20 13:30 | - | Narmont, Helena v Astigarraga Harper, Pilar | 6-1,5-4 | |
| UTR Series NIT Women | 05/19 15:00 | - | Astigarraga Harper, Pilar v Carri Hayes | 3-6,1-6 | |
| ITF W15 Curitiba | 11/30 19:25 | 25 | Noelia Zeballos v Astigarraga Harper, Pilar | 6-4,6-1 | |
| ITF W60 Brasilia | 11/21 17:10 | 54 | Sabastiani Leon v Astigarraga Harper, Pilar | 6-0,6-3 | |
| ITF W15 Castellon | 11/01 11:00 | 44 | Zehnder, Maria Jose v Astigarraga Harper, Pilar | 5-7,6-0,10-7 | |
| ITF W25 Leiria | 09/06 10:00 | 54 | Matilde Jorge v Astigarraga Harper, Pilar | 6-1,6-2 | |
| ITF - W15 Monastir | 04/25 14:00 | 44 | Ekani, Irys v Astigarraga Harper, Pilar | 7-5,6-0 | |
| ITF - W15 Monastir | 04/19 09:00 | 44 | Astigarraga Harper, Pilar v Nicole Gadient | 3-6,2-6 | |
| ITF - W15 Monastir | 04/11 12:00 | 44 | Astigarraga Harper, Pilar v Sopiko Tsitskishvili | 3-6,2-6 | |
| ITF W15 Buenos Aires | 09/17 14:00 | 44 | Merdeeva, Alija v Astigarraga Harper, Pilar | 6-0,7-5 | |
| ITF W15 Buenos Aires | 09/16 13:00 | 44 | Klimovicz, Julia v Astigarraga Harper, Pilar | 1-6,0-6 | |
| ITF W15 Buenos Aires | 09/10 12:00 | 44 | Astigarraga Harper, Pilar v Buris, Betina | 4-6,6-4,3-10 | |
| Tabarka, Singles W-ITF-TUN-18A | 08/25 15:00 | 54 | Astigarraga Harper, Pilar v Gai, Clarissa | 6-2,4-6,9-11 | |
| Tabarka, Singles W-ITF-TUN-18A | 08/21 14:30 | 25 | Astigarraga Harper, Pilar v Alicia Smith | 1-6,6-4,2-6 | |
| Tabarka, Singles W-ITF-TUN-18A | 08/19 14:00 | 54 | Gai, Clarissa v Astigarraga Harper, Pilar | 2-6,4-6 | |
| Tabarka, Singles W-ITF-TUN-18A | 08/19 07:30 | 54 | Balasubramanian, Kaaviya v Astigarraga Harper, Pilar | 1-6,4-6 | |
| ITF W25 El Espinar | 07/29 11:35 | 45 | Astigarraga Harper, Pilar v Almudena S-L Fernandez | 0-6,0-6 | |
| Tabarka, Singles W-ITF-TUN-18A | 07/22 09:30 | 54 | Peiretti, Ginevra v Astigarraga Harper, Pilar | 7-6,6-2 | |
| Tabarka, Singles W-ITF-TUN-18A | 07/17 09:40 | 25 | Astigarraga Harper, Pilar v Maelys Bougrat | 1-6,2-6 | |
| Tabarka, Singles W-ITF-TUN-18A | 07/15 14:00 | 54 | Dell'Edera, F. v Astigarraga Harper, Pilar | 2-6,3-6 | |
| ITF W25 Madrid | 06/17 12:30 | 54 | Vlada Ekshibarova v Astigarraga Harper, Pilar | 1-6,6-0,10-2 | |
| Tabarka, Singles W-ITF-TUN-18A | 05/29 14:05 | 25 | Astigarraga Harper, Pilar v Pirok, Alexa | 0-6,4-6 | |
| Tabarka, Singles W-ITF-TUN-18A | 05/20 13:30 | 54 | Lutzeier, Lena v Astigarraga Harper, Pilar | 7-5,6-0 | |
| Tabarka, Singles W-ITF-TUN-18A | 05/20 08:00 | 54 | Astigarraga Harper, Pilar v Onya, Allyson Nancy | 6-2,7-5 | |
| ITF Women Benicarlo | 11/13 13:00 | 62 | Angela Fita Boluda v Astigarraga Harper, Pilar | 7-6,6-3 | |
| ITF Women Benicarlo | 11/11 12:00 | 62 | Astigarraga Harper, Pilar v Kholopenko, Ekaterina | 7-5,6-3 | |
| ITF Women Porto | 08/02 09:00 | 25 | Ana Filipa Santos v Astigarraga Harper, Pilar | 6-4,6-1 |