Stadium: Court North 3 Round: 54 Ground: Hardcourt outdoor
| ITF W25 Austin | 2021/10/25 17:00 | Oona Orpana v Giulia Morlet | 6-4,6-1 |
| ITF W15 Norman | 2021/10/12 16:00 | Oona Orpana v Annabelle Xu | 0-6,5-7 |
| ITF W15 Lubbock | 2021/09/30 15:00 | Giulia Morlet v Oona Orpana | 6-1,2-6,6-2 |
| ITF W15 Lubbock | 2021/09/28 15:00 | Melany Solange Krywoj v Oona Orpana | 4-6,4-6 |
| ITF W25 Fort Worth | 2021/09/23 14:00 | Oona Orpana v Emma Navarro | 4-6,2-6 |
| ITF W25 Fort Worth | 2021/09/22 15:30 | Oona Orpana v Ania Hertel | 6-7,6-4,7-5 |
| ITF W15 Savitaipale | 2021/07/30 10:20 | Astrid Wanja Brune Olsen v Oona Orpana | 7-6,6-7,7-5 |
| ITF W15 Savitaipale | 2021/07/29 13:05 | Patricija Spaka v Oona Orpana | 5-7,6-7 |
| ITF W25 Austin | 2021/10/25 17:00 | Maribella Zamarripa v Rasheeda McAdoo | 5-7,7-6,10-4 |
| ITF W25 Pelham | 2021/05/17 16:40 | Jantje Tilbuerger v Maribella Zamarripa | 6-0,6-0 |
| ITF W25 Pelham | 2021/05/16 15:00 | Maribella Zamarripa v Beatrice Gumulya | 6-4,6-2 |
| ITF W25 Naples | 2021/05/03 15:00 | Anna Siskova v Maribella Zamarripa | 6-2,6-2 |
| UTR Pro Tennis Series Florida Women | 2021/05/01 13:00 | Irina Fetecau v Maribella Zamarripa | 7-6,5-1 |
| UTR Pro Tennis Series Florida Women | 2021/04/29 16:00 | Maribella Zamarripa v Dia Evtimova | 6-1,6-2 |
| UTR Pro Tennis Series Florida Women | 2021/04/28 14:30 | Maribella Zamarripa v Meera Jesudason | 7-5,6-2 |
| UTR Pro Tennis Series Florida Women | 2021/04/27 16:00 | Maribella Zamarripa v Nyjah Head | 6-3,7-6 |