| UTR Pro Tennis Series Barcelona Women | 2021/10/08 14:30 | Alogo Piqueras, Gloria v Westbury, Katherine | 4-6,3-5 |
| UTR Pro Tennis Series Barcelona Women | 2021/10/07 08:00 | Kiara Cvetkovic v Westbury, Katherine | 2-6,2-6 |
| UTR Pro Tennis Series Barcelona Women | 2021/10/06 11:00 | Berta M Avante v Westbury, Katherine | 2-6,3-6 |
| UTR Pro Tennis Series Barcelona Women | 2021/10/04 12:00 | Claudia Hoste Ferrer v Westbury, Katherine | 6-4,1-6,4-5 |
| ITF W25 Vienna | 2021/08/29 07:30 | Westbury, Katherine v Aneta Kucmova | 3-6,3-6 |
| ITF W15 Bad Waltersdorf | 2021/08/26 11:20 | Westbury, Katherine v Elena-Teodora Cadar | 2-6,2-6 |
| ITF W15 Bad Waltersdorf | 2021/08/25 08:35 | Westbury, Katherine v Yui Chikaraishi | 6-7,6-2,6-3 |
| ITF W15 Bad Waltersdorf | 2021/08/24 07:00 | Westbury, Katherine v Suchankova, Sara | 4-6,6-2,10-7 |
| UTR Pro Tennis Series Barcelona Women | 2021/10/08 11:00 | Sapfo Sakellaridi v Cegarra Ramirez, Jordina | 4-6,2-6 |
| UTR Pro Tennis Series Barcelona Women | 2021/10/07 11:00 | Sapfo Sakellaridi v Lucia Aranda Arcas | 6-2,6-1 |
| UTR Pro Tennis Series Barcelona Women | 2021/10/06 08:00 | Elizabeth Jurna v Sapfo Sakellaridi | 4-6,1-5 |
| UTR Pro Tennis Series Barcelona Women | 2021/10/05 11:00 | Ayala Serra, Nora v Sapfo Sakellaridi | 1-6,6-6 |
| UTR Pro Tennis Series Zadar Women | 2021/10/03 08:00 | Sapfo Sakellaridi v Luisa Meyer Auf Der Heide | 2-6,6-3,5-7 |
| UTR Pro Tennis Series Zadar Women | 2021/10/02 08:30 | Sapfo Sakellaridi v Sara Svetac | 4-6,6-0,5-2 |
| UTR Pro Tennis Series Zadar Women | 2021/10/01 08:00 | Sapfo Sakellaridi v Schwarcova, Natalia | 6-0,6-1 |
| UTR Pro Tennis Series Zadar Women | 2021/09/29 13:30 | Zlochova, Zuzana v Sapfo Sakellaridi | 4-6,2-6 |