Stadium: Court 1 Round: 26 Ground: Hardcourt outdoor
| ITF W60 Las Vegas | 2021/10/06 16:55 | Conny Perrin v Marcela Zacarias | 3-6,5-7 |
| ITF W60 Las Vegas | 2021/10/04 20:00 | Marcela Zacarias v Maria Kononova | 6-1,6-3 |
| ITF W60 Berkeley | 2021/10/03 19:40 | Marcela Zacarias v Usue Maitane Arconada | 1-6,3-6 |
| ITF W60 Berkeley | 2021/10/01 17:00 | Emma Navarro v Marcela Zacarias | 5-7,7-5,2-6 |
| ITF W60 Berkeley | 2021/09/30 17:00 | Brantmeier, Reese v Marcela Zacarias | 7-5,2-6,1-6 |
| ITF W60 Berkeley | 2021/09/29 17:00 | Marcela Zacarias v Katie Volynets | 7-6,3-6,6-2 |
| ITF W25 Fort Worth | 2021/09/22 15:55 | Marcela Zacarias v Kayla Day | 6-1,3-6,0-6 |
| UTR Pro Tennis Series Dallas Women | 2021/09/19 13:30 | Marcela Zacarias v Gleason, Quinn | 5-7,4-6 |
| ITF W60 Las Vegas | 2021/10/06 17:00 | Azran, Shir v Oosterhout, Erica | 1-6,3-6 |
| ITF W60 Las Vegas | 2021/10/04 17:55 | Oosterhout, Erica v Elena Ecker | 6-0,6-0 |
| ITF W25 Fort Worth | 2021/09/20 14:00 | van Nguyen, Chanelle v Oosterhout, Erica | 6-4,6-3 |
| ITF W60 San Bartolome De Tirajana | 2021/08/16 08:30 | Sohyun Park v Oosterhout, Erica | 7-6,6-1 |
| ITF W60 San Bartolome De Tirajana Qual | 2021/08/15 10:20 | Oosterhout, Erica v Valeria Koussenkova | 6-1,6-1 |
| ITF W60 San Bartolome De Tirajana | 2021/08/08 10:00 | Oosterhout, Erica v Dia Evtimova | 6-3,3-6,10-12 |
| ITF W25 Bydgoszcz | 2021/08/01 08:00 | Laura Radakovic v Oosterhout, Erica | 0-6,6-3,10-5 |
| ITF W60 Grodzisk Mazowiecki | 2021/07/26 09:00 | Maria Lourdes Carle v Oosterhout, Erica | 6-4,6-2 |