| ITF Women Orlando | 2017/01/14 23:00 | Catherine Harrison v Marcela Zacarias | 6-0,5-7,5-7 |
| UTR Pro Tennis Series Nevada Women | 2021/05/30 15:00 | Vivian Ovrootsky v Marcela Zacarias | 2-6,7-6,3-6 |
| UTR Pro Tennis Series Nevada Women | 2021/05/29 15:00 | Maya Pitts v Marcela Zacarias | 4-6,7-5,2-6 |
| UTR Pro Tennis Series Nevada Women | 2021/05/28 15:00 | Maria Kononova v Marcela Zacarias | 0-6,2-6 |
| UTR Pro Tennis Series Nevada Women | 2021/05/27 21:00 | Jessica Bernales v Marcela Zacarias | 3-6,0-6 |
| 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 W25 Pelham | 2021/05/19 19:50 | Catherine Harrison v Mirjam Bjorklund | 2-6,3-6 |
| ITF W100 Bonita Springs | 2021/05/12 13:50 | Katie Volynets v Catherine Harrison | 6-3,6-2 |
| ITF W100 Bonita Springs | 2021/05/11 16:15 | Catherine Harrison v Victoria Duval | 1-6,4-6 |
| ITF W100 Bonita Springs | 2021/05/10 23:50 | Gabriela Talaba v Catherine Harrison | 4-6,1-6 |
| ITF W25 Naples | 2021/05/05 14:00 | Irina Fetecau v Catherine Harrison | 6-1,6-2 |
| ITF W60 Charlottesville | 2021/04/27 15:50 | Jamie Loeb v Catherine Harrison | 6-4,6-2 |
| ITF W60 Charlottesville | 2021/04/26 17:25 | Rosie Johanson v Catherine Harrison | 4-6,0-6 |
| WTA Charleston | 2021/04/03 17:25 | Catherine Harrison v Kateryna Volodko | 7-5,2-6,3-6 |