Stadium: Court 4 Round: 26 Ground: Clay
| 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 |
| ITF W15 Bad Waltersdorf | 2021/08/22 09:00 | Westbury, Katherine v Mila Masic | 6-2,6-4 |
| ITF W25 Oldenzaal | 2021/08/16 16:15 | Elena Malygina v Westbury, Katherine | 6-3,7-6 |
| UTR Pro Tennis Series Adelaide Women | 2021/06/02 00:30 | Otway, Jade v Westbury, Katherine | 0-0 |
| UTR Pro Tennis Series Adelaide Women | 2021/06/01 02:30 | Sarah Munroe v Westbury, Katherine | 1-6,0-6 |
| UTR Pro Tennis Series Adelaide Women | 2021/05/29 04:00 | Westbury, Katherine v Woolcock, Belinda | 1-6,2-3 |
| UTR Pro Tennis Series Adelaide Women | 2021/05/28 03:30 | Alana Parnaby v Westbury, Katherine | 6-1,3-6,2-6 |
| ITF W15 Bad Waltersdorf | 2021/08/24 11:35 | Elena-Teodora Cadar v Selena Janicijevic | 3-6,6-4,7-6 |
| ITF W15 Warmbad-Villach | 2021/08/19 08:00 | Melania Delai v Elena-Teodora Cadar | 7-6,6-1 |
| ITF W15 Warmbad-Villach | 2021/08/17 10:30 | Husaric, Anita v Elena-Teodora Cadar | 6-2,6-7,4-6 |
| ITF W15 Bratislava | 2021/08/11 10:10 | Elena-Teodora Cadar v Michel, Lara | 2-6,6-3,0-6 |
| ITF - W15 Héraklion | 2021/06/08 10:55 | Angelina Wirges v Elena-Teodora Cadar | 6-2,3-6,6-2 |
| ITF - W15 Héraklion | 2021/06/03 08:00 | Elena-Teodora Cadar v Tina Nadine Smith | 3-6,4-6 |
| ITF - W15 Héraklion | 2021/06/02 08:25 | Julia Stamatova v Elena-Teodora Cadar | 0-6,6-0,3-6 |
| ITF - W15 Héraklion | 2021/05/26 06:30 | Elena-Teodora Cadar v Franziska Sziedat | 5-7,6-2,5-7 |