Stadium: Court 22 Round: 26 Ground: Clay
| ITF W15 Antalya | 2021/06/02 07:30 | Estella Jaeger v Vivien Sandberg | 6-1,6-7,4-6 |
| ITF W15 Antalya | 2021/05/26 07:00 | Vivien Sandberg v Daria Zelinskaya | 3-6,6-3,2-6 |
| ITF W15 Antalya | 2021/05/25 07:00 | Eva Garkusha v Vivien Sandberg | 4-6,0-6 |
| ITF W15 Antalya | 2021/05/24 10:00 | Mija Ljubic v Vivien Sandberg | 0-6,1-6 |
| German Championship Women | 2020/12/07 12:30 | Anna-Marie Weissheim v Vivien Sandberg | 6-0,6-2 |
| ITF W15 Oldenzaal | 2019/08/14 09:15 | Vivien Sandberg v Stefania Rogozinska-Dzik | 2-6,1-6 |
| ITF W15 Sandelfjord | 2019/07/24 08:00 | Maria Manilova v Vivien Sandberg | 6-2,2-6,7-5 |
| ITF W15 Sandelfjord | 2019/07/23 09:25 | Vivien Sandberg v Victoria Carlsten | 6-2,1-6,10-7 |
| ITF W15 Antalya | 2021/06/01 07:00 | Iman Khan v Natalia Siedliska | 6-4,0-6,1-6 |
| ITF W15 Antalya | 2021/05/12 08:40 | Caijsa W Hennemann v Natalia Siedliska | 7-5,7-5 |
| ITF W15 Antalya | 2021/05/04 09:10 | Natalia Siedliska v Ekaterina Shalimova | 6-4,0-6,5-7 |
| ITF W15 Cairo | 2021/04/28 08:00 | Zoe Kruger v Natalia Siedliska | 6-3,6-4 |
| ITF W15 Sharm El Sheikh | 2021/03/31 07:00 | Ya-Hsuan Lee v Natalia Siedliska | 6-3,6-2 |
| ITF W15 Sharm El Sheikh | 2021/03/24 09:00 | Elena-Teodora Cadar v Natalia Siedliska | 6-3,6-2 |
| UTR Pro Tennis Series France Women | 2020/09/14 14:30 | Natalia Siedliska v Darya Astakhova | 6-1,2-6,5-10 |
| UTR Pro Tennis Series France Women | 2020/09/12 12:00 | Natalia Siedliska v Anna Morgina | 6-1,6-1 |