Stadium: Court 2 Round: 25 Ground: Hardcourt indoor
| UTR Pro Tennis Series Dallas Women | 2021/07/11 13:00 | Marcela Zacarias v Catherine Harrison | 7-6,5-1 |
| ITF Women Orlando | 2017/01/14 23:00 | Catherine Harrison v Marcela Zacarias | 6-0,5-7,5-7 |
| UTR Pro Tennis Series Atlanta Women | 2021/07/25 12:00 | Aldila Sutjiadi v Marcela Zacarias | 0-6,2-5 |
| UTR Pro Tennis Series Atlanta Women | 2021/07/24 12:00 | Carol Young Suh Lee v Marcela Zacarias | 3-6,3-6 |
| UTR Pro Tennis Series Atlanta Women | 2021/07/23 12:00 | Carson Tanguilig v Marcela Zacarias | 1-6,6-7 |
| UTR Pro Tennis Series Atlanta Women | 2021/07/22 12:00 | Lana Mavor v Marcela Zacarias | 1-6,0-6 |
| UTR Pro Tennis Series Atlanta Women | 2021/07/21 12:00 | Victoria Allen v Marcela Zacarias | 0-6,2-6 |
| UTR Pro Tennis Series Atlanta Women | 2021/07/19 15:00 | Marcela Zacarias v Nell Miller | 6-2,5-1 |
| UTR Pro Tennis Series Dallas Women | 2021/07/11 13:00 | Marcela Zacarias v Catherine Harrison | 7-6,5-1 |
| UTR Pro Tennis Series Dallas Women | 2021/07/10 13:00 | Marcela Zacarias v Maria Kononova | 6-0,6-1 |
| WTA Concord | 2021/08/01 14:00 | Robin Anderson v Catherine Harrison | 7-5,6-1 |
| WTA Charleston | 2021/07/26 19:30 | Rebecca Marino v Catherine Harrison | 6-4,6-4 |
| ITF W25 Evansville | 2021/07/16 17:05 | Mayo Hibi v Catherine Harrison | 6-1,6-1 |
| ITF W25 Evansville | 2021/07/15 14:00 | Robin Montgomery v Catherine Harrison | 3-6,6-7 |
| ITF W25 Evansville | 2021/07/14 16:20 | Joelle Kissell v Catherine Harrison | 1-6,1-6 |
| UTR Pro Tennis Series Dallas Women | 2021/07/11 13:00 | Marcela Zacarias v Catherine Harrison | 7-6,5-1 |
| UTR Pro Tennis Series Dallas Women | 2021/07/10 16:00 | Emma Staker v Catherine Harrison | 2-6,5-6 |
| UTR Pro Tennis Series Dallas Women | 2021/07/09 17:30 | Catherine Harrison v Anna Riedmiller | 7-6,6-1 |