Stadium: Court 4 Round: 25 Ground: Clay
| ITF W15 Bad Waltersdorf | 2021/08/24 07:00 | Katherine Westbury v Sara Suchankova | 4-6,6-2,10-7 |
| ITF W15 Bad Waltersdorf | 2021/08/22 09:00 | Katherine Westbury v Mila Masic | 6-2,6-4 |
| ITF W25 Oldenzaal | 2021/08/16 16:15 | Elena Malygina v Katherine Westbury | 6-3,7-6 |
| UTR Pro Tennis Series Adelaide - nők | 2021/06/02 00:30 | Jade Otway v Katherine Westbury | 0-0 |
| UTR Pro Tennis Series Adelaide - nők | 2021/06/01 02:30 | Sarah Munroe v Katherine Westbury | 1-6,0-6 |
| UTR Pro Tennis Series Adelaide - nők | 2021/05/29 04:00 | Katherine Westbury v Belinda Woolcock | 1-6,2-3 |
| UTR Pro Tennis Series Adelaide - nők | 2021/05/28 03:30 | Alana Parnaby v Katherine Westbury | 6-1,3-6,2-6 |
| UTR Pro Tennis Series Adelaide - nők | 2021/05/27 23:30 | Juliette Robinson v Katherine Westbury | 0-6,0-5 |
| ITF W15 Monastir | 2021/06/30 08:30 | Yui Chikaraishi v Mariana Drazic | 2-6,0-6 |
| ITF W15 Monastir | 2021/06/26 08:30 | Yui Chikaraishi v Valeria Bhunu | 2-6,2-6 |
| ITF W15 Monastir | 2021/06/25 08:30 | Yui Chikaraishi v Mio Mushika | 6-2,4-6,7-6 |
| ITF W15 Monastir | 2021/06/24 08:30 | Yui Chikaraishi v Tara Malik | 6-3,6-0 |
| ITF W15 Monastir | 2021/06/22 10:00 | Noa Liauw A Fong v Yui Chikaraishi | 2-6,2-6 |
| ITF W15 Monastir | 2021/06/16 12:20 | Yui Chikaraishi v Gozal Ainitdinova | 1-6,1-6 |
| ITF W15 Monastir | 2021/06/08 10:05 | Yui Chikaraishi v Alice Robbe | 1-6,1-6 |
| ITF W15 Monastir | 2021/03/28 15:00 | Giulia Sartori v Yui Chikaraishi | 2-6,7-5,6-10 |