Stadium: Court 17 Round: 25 Ground: Clay
| ITF W15 Antalya | 2021/06/04 07:25 | Manon Arcangioli v Natalia Siedliska | 7-6,2-6,6-2 |
| ITF W15 Antalya | 2021/06/03 07:30 | Vivien Sandberg v Natalia Siedliska | 2-6,3-6 |
| 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 |
| ITF W15 Antalya | 2021/06/02 09:40 | Anet A Koskel v Chelsea Vanhoutte | 0-6,0-6 |
| ITF W15 Antalya | 2021/06/01 12:40 | Anet A Koskel v Elsa Wan | 7-5,6-2 |
| ITF W15 Antalya | 2021/05/31 07:30 | Anet A Koskel v Neslihan Demirci | 6-1,6-0 |
| ITF W15 Antalya | 2021/05/25 07:00 | Alexandra Vasilyeva v Anet A Koskel | 6-1,6-3 |
| ITF W15 Antalya | 2021/05/24 10:00 | Anet A Koskel v Estella Jaeger | 6-1,6-2 |
| ITF W15 Haabneeme | 2020/11/17 09:15 | Anet A Koskel v Elisabeth Iila | 1-6,3-6 |
| ITF W15 Haabneeme | 2020/11/16 08:00 | Natalie Augustinova v Anet A Koskel | 4-6,6-2,10-12 |
| ITF W15 Parnu | 2019/11/04 10:00 | Vilena Petrova v Anet A Koskel | 6-1,7-6 |