Stadium: Court 3 Round: 25 Ground: Clay
| ITF W15 Cancun | 2019/05/10 14:00 | Marcela Zacarias v Piai, Eduarda | 7-5,6-0 |
| ITF W25 Guayaquil | 2019/08/17 16:00 | Marcela Zacarias v Maria Camila Osorio Serrano | 4-6,6-2,3-6 |
| ITF W25 Guayaquil | 2019/08/16 16:00 | Renata Zarazua v Marcela Zacarias | 1-6,3-6 |
| ITF W25 Guayaquil | 2019/08/15 17:10 | Yuliana Monroy v Marcela Zacarias | 2-6,1-6 |
| ITF W25 Guayaquil | 2019/08/13 18:40 | Villarreal, Andrea Renee v Marcela Zacarias | 0-6,4-6 |
| Gatineau, Singles W-ITF-CAN-04A | 2019/07/19 14:00 | Marcela Zacarias v Fernandez, Leylah Annie | 6-7,2-6 |
| Gatineau, Singles W-ITF-CAN-04A | 2019/07/18 16:15 | Marcela Zacarias v Ho, Jessica | 6-4,6-1 |
| Gatineau, Singles W-ITF-CAN-04A | 2019/07/17 17:40 | Momoko Kobori v Marcela Zacarias | 5-7,2-6 |
| ITF W25 Saskatoon | 2019/07/13 17:00 | Katherine Sebov v Marcela Zacarias | 6-4,1-6,6-3 |
| ITF W25 Guayaquil | 2019/08/19 17:10 | Piai, Eduarda v Laura Ashley | 6-2,6-2 |
| ITF W25 Guayaquil | 2019/08/14 15:00 | Renata Zarazua v Piai, Eduarda | 6-3,6-2 |
| ITF W15 Cancun | 2019/07/19 13:30 | Thaisa Grana Pedretti v Piai, Eduarda | 6-0,6-2 |
| ITF W15 Cancun | 2019/07/18 15:00 | Olivia Gram v Piai, Eduarda | 5-7,0-6 |
| ITF W15 Cancun | 2019/07/16 15:15 | Keren, Yuval v Piai, Eduarda | 3-6,2-6 |
| ITF W15 Cancun | 2019/07/10 14:45 | Piai, Eduarda v Ingrid Gamarra Martins | 5-7,3-6 |
| ITF W15 Cancun | 2019/07/04 15:25 | Piai, Eduarda v Maria Lourdes Carle | 3-6,1-6 |
| ITF W15 Cancun | 2019/07/02 17:20 | Piai, Eduarda v Borovinskaya, Anna | 6-1,6-0 |