Stadium: Court 6 Round: 44 Ground: Hardcourt outdoor
| ITF W15 Cancun | 2020/03/09 19:30 | Katja Wiersholm v Kariann Pierre-Louis | 1-6,1-6 |
| ITF W15 Cancun | 2020/03/09 17:00 | Madison Bourguignon v Katja Wiersholm | 6-7,3-6 |
| ITF W25 Daytona Beach | 2020/01/12 16:00 | Katja Wiersholm v Yuxuan Zhang | 2-6,3-6 |
| ITF W15 Oslo | 2019/10/21 07:00 | Liisa Vehvilainen v Katja Wiersholm | 6-3,4-6,11-9 |
| ITF W15 Oslo | 2019/10/20 08:00 | Magdalena Hedrzak v Katja Wiersholm | 1-6,1-6 |
| ITF W15 Lubbock | 2019/09/19 15:00 | Katja Wiersholm v Savannah Broadus | 6-3,5-7,4-6 |
| ITF W15 Lubbock | 2019/09/17 15:00 | Katja Wiersholm v Thasaporn Naklo | 6-2,7-5 |
| ITF Women Sandelfjord | 2018/07/23 14:35 | Katja Wiersholm v Mary Closs | 4-6,5-7 |