Stadium: Court 2 Round: 62 Ground: Clay
| ITF W25 Lujan | 2023/09/24 13:00 | Katja Markus v Camila Romero | 0-6,2-6 |
| ITF W15 Wanfercee-Baulet | 2023/08/21 07:30 | Vivien Sandberg v Katja Markus | 6-2,6-1 |
| ITF W25 Erwitte | 2023/08/14 10:30 | Katja Markus v Carla Markus | 2-6,3-6 |
| ITF W15 Rosario | 2023/06/27 12:00 | Katja Markus v Michela Castro Zunino | 3-6,2-6 |
| ITF W15 Buenos Aires | 2023/06/19 13:30 | Katja Markus v Michela Castro Zunino | 7-6,1-6,3-10 |
| ITF W15 Recife | 2023/05/24 17:50 | Katja Markus v Alessandra Caceres | 4-6,4-6 |
| ITF W15 Curitiba | 2023/05/16 13:00 | Katja Markus v Isabel Oliveira | 7-5,1-6,8-10 |
| ITF W15 Curitiba | 2023/05/15 16:00 | Katja Markus v Bianca G Lampert | 4-6,6-0,10-4 |
| ITF W25 Lujan | 2023/09/25 13:00 | Lara Diaz Zayas v Catarina M I Melleiro Junior | 7-5,7-5 |
| ITF W15 Lima | 2023/08/22 15:00 | Carolina Alvarez v Catarina M I Melleiro Junior | 1-6,6-2,6-1 |
| ITF W40 Arequipa | 2023/08/16 14:30 | Valeriya Strakhova v Catarina M I Melleiro Junior | 6-0,6-3 |
| ITF W40 Arequipa | 2023/08/13 16:25 | Catarina M I Melleiro Junior v Sofiya Lebedeva | 6-3,6-0 |
| ITF W80 Brasilia | 2023/08/06 14:45 | Catarina M I Melleiro Junior v Rebeca Pereira | 1-6,5-7 |
| ITF W60 Feira De Santana | 2023/07/31 17:00 | Catarina M I Melleiro Junior v Leticia Garcia Vidal | 6-7,1-6 |
| ITF W15 Rosario | 2023/06/27 14:25 | Marina Bulbarella v Catarina M I Melleiro Junior | 7-5,4-6,6-3 |
| ITF W15 Buenos Aires | 2023/06/22 13:00 | Catarina M I Melleiro Junior v Sol A Larraya Guidi | 4-6,4-6 |