Stadium: Court 1 Round: 26 Ground: Hardcourt indoor
| ITF - W25 Hamburg | 2021/10/19 12:55 | Olivia Gadecki v Kathinka Von Deichmann | 2-6,1-6 |
| ITF - W60 Bellinzona | 2021/04/05 11:05 | Kathinka Von Deichmann v Ekaterine Gorgodze | 6-7,4-6 |
| ITF - W25 Dubai | 2021/04/01 06:25 | Kathinka Von Deichmann v Na-Lae Han | 1-6,6-7 |
| ITF - W25 Dubai | 2021/03/31 08:55 | Lin Zhu v Kathinka Von Deichmann | 3-6,3-6 |
| ITF - W25 Dubai | 2021/03/29 10:25 | Kathinka Von Deichmann v Anna Bondar | 2-6,6-1,6-4 |
| WTA - St. Petersburg | 2021/03/13 13:20 | Kathinka Von Deichmann v Arina Rodionova | 4-6,4-6 |
| ITF - W25 Manacor | 2021/03/04 11:00 | Kathinka Von Deichmann v Irina Fetecau | 2-6,4-6 |
| ITF - W25 Manacor | 2021/03/02 11:45 | Lara Salden v Kathinka Von Deichmann | 5-7,3-6 |
| ITF - W80 Wiesbaden | 2021/09/20 08:00 | Lina Gjorcheska v Julia Middendorf | 6-3,6-4 |
| ITF - W15 Erwitte | 2021/08/22 10:00 | Julia Middendorf v Sofia Nami Samavati | 3-6,7-5,6-2 |
| ITF - W15 Erwitte | 2021/08/20 10:55 | Angelina Wirges v Julia Middendorf | 5-7,5-7 |
| ITF - W15 Erwitte | 2021/08/19 11:50 | Carolina Kuhl v Julia Middendorf | 0-6,0-6 |
| ITF - W15 Erwitte | 2021/08/17 11:00 | Nicole Rivkin v Julia Middendorf | 2-6,1-6 |
| WTA - Bad Homburg | 2021/06/20 09:00 | Anna Zaja v Julia Middendorf | 6-2,7-5 |
| WTA - Berlin | 2021/06/12 16:15 | Julia Middendorf v Stefanie Voegele | 1-6,2-6 |
| WTA - Stuttgart | 2021/04/20 12:05 | Julia Middendorf v Anett Kontaveit | 2-6,3-6 |