| ITF W25 Dallas | 10/24 15:00 | 26 | [274] Jodie Anna Burrage v Marcela Zacarias [395] | 1-6,2-6 | |
| ITF W25 Dallas | 10/23 15:00 | 25 | [395] Marcela Zacarias v Jacqueline Cako [248] | 6-4,6-4 | |
| ITF W25 Florencia | 10/17 14:00 | 26 | Peyton Stearns v Marcela Zacarias | 2-6,6-2,6-3 | |
| ITF W25 Florencia | 10/16 20:50 | 25 | Shahar Biran v Marcela Zacarias | 1-6,0-6 | |
| ITF W60 Charleston | 10/02 18:45 | 25 | Marine Partaud v Marcela Zacarias | 6-3,6-3 | |
| ITF W60 Templeton | 09/24 20:10 | 25 | [397] Marcela Zacarias v Hailey Baptiste [261] | 5-7,7-6,2-6 | |
| ITF W25 Guayaquil | 08/23 18:30 | 27 | [455] Marcela Zacarias v Gabriela Talaba [347] | 6-7,6-2,3-6 | |
| ITF W25 Guayaquil | 08/22 16:40 | 26 | Marcela Zacarias v Maria Lourdes Carle | 6-0,6-1 | |
| ITF W25 Guayaquil | 08/21 20:30 | 25 | Marcela Zacarias v Eduarda Piai | 6-4,6-4 | |
| ITF W25 Guayaquil | 08/17 16:00 | 28 | [453] Marcela Zacarias v Maria C O Serrano [329] | 4-6,6-2,3-6 | |
| ITF W25 Guayaquil | 08/16 16:00 | 27 | [305] Renata Zarazua v Marcela Zacarias [453] | 1-6,3-6 | |
| ITF W25 Guayaquil | 08/15 17:10 | 26 | Yuliana Monroy v Marcela Zacarias | 2-6,1-6 | |
| ITF W25 Guayaquil | 08/13 18:40 | 25 | Andrea R Villarreal v Marcela Zacarias | 0-6,4-6 | |
| ITF W25 Gatineau | 07/19 14:00 | 27 | [455] Marcela Zacarias v Leylah A Fernandez [373] | 6-7,2-6 | |
| ITF W25 Gatineau | 07/18 16:15 | 26 | Marcela Zacarias v Jessica Ho | 6-4,6-1 | |
| ITF W25 Gatineau | 07/17 17:40 | 25 | [259] Momoko Kobori v Marcela Zacarias [455] | 5-7,2-6 | |
| ITF W25 Saskatoon | 07/13 17:00 | 28 | [212] Katherine Sebov v Marcela Zacarias [456] | 6-4,1-6,6-3 | |
| ITF W25 Saskatoon | 07/12 18:55 | 27 | [438] Hanna Chang v Marcela Zacarias [456] | 4-6,5-7 | |
| ITF W25 Saskatoon | 07/11 20:25 | 26 | [456] Marcela Zacarias v Ashley Kratzer [308] | 3-6,6-2,6-2 | |
| ITF W25 Saskatoon | 07/09 20:20 | 25 | [371] Leylah Annie Fernandez v Marcela Zacarias [456] | 6-3,4-6,4-6 | |
| ITF W25 Denver | 06/20 20:15 | 26 | Victoria Duval v Marcela Zacarias | 6-4,6-2 | |
| ITF W25 Denver | 06/19 16:00 | 25 | Marcela Zacarias v Nastja Kolar | 6-4,6-3 | |
| ITF W25 Sumter | 06/14 14:00 | 27 | [440] Marcela Zacarias v Hailey Baptiste [333] | 6-2,3-6,6-7 | |
| ITF W25 Sumter | 06/13 14:00 | 26 | [407] Katie Volynets v Marcela Zacarias [440] | 3-6,1-6 | |
| ITF W25 Sumter | 06/12 15:30 | 25 | Madison Westby v Marcela Zacarias | 2-6,1-6 | |
| ITF W15 Cancún | 05/19 15:00 | 29 | Marcela Zacarias v Patricia Maria Tig | 6-3,6-3 | |
| ITF W15 Cancún | 05/18 14:30 | 28 | Marcela Zacarias v Kirsten-Andrea Weedon | 6-4,6-1 | |
| ITF W15 Cancún | 05/17 13:30 | 27 | Marcela Zacarias v Kelly Williford | 6-0,6-0 | |
| ITF W15 Cancún | 05/16 13:30 | 26 | Marcela Zacarias v Paula Baranano | 6-2,6-2 | |
| ITF W15 Cancún | 05/14 15:35 | 25 | Marcela Zacarias v Madison Westby | 6-1,6-3 |