| UTR Pro Tennis Series Nevada Women | 2021/05/25 21:30 | Kendall Kovick v Marcela Zacarias | 4-6,2-5 |
| UTR Pro Tennis Series Nevada Women | 2021/05/24 16:30 | Marcela Zacarias v Alaina Miller | 6-4,6-0 |
| ITF W25 Pelham | 2021/05/20 15:00 | Marine Partaud v Marcela Zacarias | 6-4,1-6,6-3 |
| ITF W25 Pelham | 2021/05/19 15:00 | Brooklyn Olson v Marcela Zacarias | 1-6,0-6 |
| ITF W100 Bonita Springs | 2021/05/11 00:45 | Katie Swan v Marcela Zacarias | 6-2,6-2 |
| UTR Pro Tennis Series California Women | 2021/05/09 15:00 | Marcela Zacarias v Veronika Miroshnichenko | 6-3,5-1 |
| UTR Pro Tennis Series California Women | 2021/05/08 15:00 | Marcela Zacarias v Dalayna Hewitt | 7-6,6-4 |
| UTR Pro Tennis Series California Women | 2021/05/07 16:30 | Marcela Zacarias v Kaia Wolfe | 6-0,6-1 |