Stadium: Court 17 Round: 54 Ground: Clay
| ITF W25 Sumter | 2019/06/13 14:00 | Katie Volynets v Marcela Zacarias | 3-6,1-6 |
| ITF W25 Boca Raton | 2021/02/22 15:00 | Marcela Zacarias v Peyton Stearns | 6-1,6-4 |
| ITF W25 Orlando | 2021/02/15 18:30 | Marcela Zacarias v Sophia Whittle | 6-4,5-7,9-11 |
| WTA Prague | 2020/08/29 08:00 | Marcela Zacarias v Olga Danilovic | 3-6,1-6 |
| UTR Pro Tennis Series California - nők | 2020/08/23 15:00 | Deniz Khazaniuk v Marcela Zacarias | 5-7,6-3,10-5 |
| UTR Pro Tennis Series California - nők | 2020/08/22 12:00 | Lorraine M. Guillermo v Marcela Zacarias | 6-2,1-6,9-11 |
| UTR Pro Tennis Series California - nők | 2020/08/21 16:15 | Marcela Zacarias v Hanna Chang | 6-4,6-3 |
| UTR Pro Tennis Series California - nők | 2020/08/20 17:30 | Marcela Zacarias v Haley Giavara | 6-1,7-5 |
| UTR Pro Tennis Series California - nők | 2020/08/20 15:00 | Marcela Zacarias v Tricia Mar | 6-1,6-0 |
| ITF W25 Boca Raton | 2021/02/22 15:00 | Maria Lourdes Carle v Katie Volynets | 6-4,5-7,10-12 |
| ITF W25 Orlando | 2021/02/19 15:00 | Katie Volynets v Katie Swan | 1-6,1-6 |
| ITF W25 Orlando | 2021/02/18 16:00 | Mariam Bolkvadze v Katie Volynets | 6-4,1-6,2-6 |
| ITF W25 Orlando | 2021/02/17 22:50 | Katie Volynets v Maria Mateas | 6-3,6-4 |
| ITF W25 Orlando | 2021/02/16 16:40 | Irene Burillo Escorihuela v Katie Volynets | 4-6,3-6 |
| ITF W25 Orlando | 2021/02/15 15:30 | Carole Monnet v Katie Volynets | 5-7,2-6 |
| ITF W60 Rome, GA | 2021/01/26 19:10 | Katie Volynets v Kimmi Hance | 6-7,6-3,6-10 |
| ITF W60 Rome, GA | 2021/01/25 18:30 | Katie Volynets v Elizabeth Coleman | 6-1,6-1 |