Stadium: Court 11 Round: 26 Ground: Hardcourt outdoor
| UTR Pro Tennis Series California Women | 2021/12/28 22:00 | Priya Nelson v Katherine Hui | 6-0,2-0 |
| UTR Pro Tennis Series California Women | 2021/12/28 16:00 | Katherine Hui v Casie Wooten | 0-6,4-6 |
| ITF W60 Rancho Santa Fe | 2021/10/12 16:30 | Katherine Hui v Dalayna Hewitt | 3-6,3-6 |
| ITF W60 Rancho Santa Fe | 2021/10/11 16:55 | Risa Ushijima v Katherine Hui | 2-6,3-6 |
| UTR Pro Tennis Series California Women | 2021/08/29 16:40 | Sophia Yang v Katherine Hui | 3-6,2-6 |
| UTR Pro Tennis Series California Women | 2021/08/28 18:00 | Maya Iyengar v Katherine Hui | 6-3,3-6,0-5 |
| UTR Pro Tennis Series California Women | 2021/08/27 18:00 | Toni Nelson v Katherine Hui | 6-4,6-3 |
| UTR Pro Tennis Series California Women | 2021/08/25 23:00 | Krisha Mahendran v Katherine Hui | 1-6,6-4,3-6 |
| ITF W25 Orlando | 2021/11/02 13:55 | Maria Jose Portillo Ramirez v Katja Wiersholm | 6-1,6-3 |
| ITF W25 Orlando | 2021/11/01 14:00 | Katja Wiersholm v Jessica Livianu | 4-6,6-2,12-10 |
| ITF W25 Florence | 2021/10/13 15:40 | Fernanda Contreras Gomez v Katja Wiersholm | 7-6,6-3 |
| ITF W25 Florence | 2021/10/12 15:20 | Lauren Proctor v Katja Wiersholm | 1-6,3-6 |
| ITF W25 Florence | 2021/10/11 17:00 | Maria Kononova v Katja Wiersholm | 6-7,4-6 |
| ITF W15 Hilton Head | 2021/10/09 17:00 | Katja Wiersholm v Ania Hertel | 2-6,1-6 |
| ITF W15 Hilton Head | 2021/10/09 13:00 | Katja Wiersholm v Emily Ruckno | 6-0,6-0 |
| ITF W15 Hilton Head | 2021/10/07 14:20 | Joelle Kissell v Katja Wiersholm | 5-7,4-6 |