| ITF W80 Rancho Santa Fe | 10/09 17:50 | 29 | [229] Marcela Zacarias v Katrina Scott [184] | 6-1,6-2 | |
| ITF W80 Rancho Santa Fe | 10/08 17:55 | 28 | [229] Marcela Zacarias v Elvina Kalieva [219] | 3-6,7-6,6-4 | |
| ITF W80 Rancho Santa Fe | 10/07 17:55 | 27 | [229] Marcela Zacarias v Alexandra Eala [281] | 6-2,7-5 | |
| ITF W80 Rancho Santa Fe | 10/06 16:50 | 26 | Hina Inoue v Marcela Zacarias | 1-6,5-7 | |
| ITF W80 Rancho Santa Fe | 10/05 18:30 | 25 | [271] Whitney Osuigwe v Marcela Zacarias [229] | 3-6,3-6 | |
| ITF W60 Templeton | 09/30 19:00 | 27 | [239] Sophie Chang v Marcela Zacarias [206] | 6-2,7-5 | |
| ITF W60 Templeton | 09/29 19:35 | 26 | [206] Marcela Zacarias v Katrina Scott [186] | 6-4,6-1 | |
| ITF W60 Templeton | 09/28 22:50 | 25 | [280] Katherine Sebov v Marcela Zacarias [206] | Retired | |
| ITF W60 Berkeley | 09/20 23:10 | 25 | [278] Whitney Osuigwe v Marcela Zacarias [204] | 1-6,6-1,6-2 | |
| UTR Pro Tennis Series - Columbus - Femenino | 08/22 19:00 | - | Amara Brahmbhatt v Marcela Zacarias | View | |
| WTA Cleveland | 08/22 15:00 | 25 | [212] Marcela Zacarias v Sorana Cirstea [38] | 2-6,3-6 | |
| WTA Cleveland | 08/21 18:35 | 19 | [206] Marcela Zacarias v Dalayna Hewitt [436] | 6-2,4-6,4-6 | |
| WTA Cleveland | 08/20 14:00 | 14 | [206] Marcela Zacarias v Victoria Duval [352] | 6-4,3-6,6-2 | |
| ITF W100 Landisville | 08/11 15:35 | 26 | [218] Marcela Zacarias v Na-Lae Han [247] | 4-6,3-6 | |
| ITF W100 Landisville | 08/10 19:55 | 25 | Raveena Kingsley v Marcela Zacarias | 6-7,6-2,3-6 | |
| ITF W100 Landisville | 08/09 22:25 | 54 | [218] Marcela Zacarias v Dalayna Hewitt [442] | 3-6,7-5,10-5 | |
| ITF W60 Lexington | 08/06 18:30 | 28 | [234] Katie Swan v Marcela Zacarias [241] | 6-2,7-6 | |
| ITF W60 Lexington | 08/05 17:45 | 27 | Veronica Miroshnichenko v Marcela Zacarias | 2-6,4-6 | |
| ITF W60 Lexington | 08/04 15:30 | 26 | Jantje Tilbuerger v Marcela Zacarias | 1-6,6-7 | |
| ITF W60 Lexington | 08/03 15:45 | 25 | [241] Marcela Zacarias v Lina Glushko [211] | Retired | |
| ITF W25 Dallas | 07/28 16:30 | 26 | Marcela Zacarias v Clervie Ngounoue | 5-7,3-6 | |
| ITF W25 Dallas | 07/27 14:55 | 25 | Marcela Zacarias v Jiangxue Han | 6-3,6-3 | |
| ITF W60 Evansville | 07/22 13:55 | 26 | [351] Victoria Duval v Marcela Zacarias [242] | 6-4,7-5 | |
| ITF W60 Evansville | 07/21 13:50 | 25 | [448] Yexin Ma v Marcela Zacarias [242] | 6-4,3-6,0-6 | |
| ITF W100 Charleston | 06/30 21:05 | 26 | Marcela Zacarias v Himeno Sakatsume | 1-6,4-6 | |
| ITF W100 Charleston | 06/30 12:50 | 25 | [255] Marcela Zacarias v Christina Rosca [236] | 6-3,6-1 | |
| Wimbledon - Femenino | 06/21 15:25 | 14 | [151] Yue Yuan v Marcela Zacarias [241] | 6-4,7-5 | |
| ITF W100 Ilkley | 06/13 09:55 | 54 | [236] Marcela Zacarias v Danielle Lao [265] | 5-7,6-4,7-10 | |
| ITF W100 Ilkley | 06/12 11:15 | 54 | Marcela Zacarias v Ella Mcdonald | 6-0,6-0 | |
| ITF W100 Surbiton | 05/31 10:00 | 54 | Marcela Zacarias v Sabine Lisicki | 2-6,1-6 |