Stadium: ourt 4C Round: 54 Ground: Clay
| ITF Women Hammamet | 2018/02/01 08:30 | Natalia Siedliska v Burger, Cindy | 0-6,1-6 |
| ITF Women Hammamet | 2018/01/30 10:45 | Natalia Siedliska v Griessner, Elena | 6-2,6-1 |
| ITF Women Stuttgart | 2018/01/23 09:00 | Markova, Johana v Natalia Siedliska | 6-1,6-1 |
| ITF Women Stuttgart | 2018/01/22 09:00 | Natalia Siedliska v Adler, Lou | 6-2,6-7,6-4 |
| ITF Women Stellenbosch | 2017/12/08 07:30 | Simmonds, Chanel v Natalia Siedliska | 6-4,6-3 |
| ITF Women Stellenbosch | 2017/12/07 09:30 | Natalia Siedliska v Steur, Julyette Maria Josephine | 6-0,6-4 |
| ITF Women Stellenbosch | 2017/12/06 09:30 | Januskova, Petra v Natalia Siedliska | 1-6,3-6 |
| ITF Women Stellenbosch Qual | 2017/12/04 12:35 | Natalia Siedliska v de Waal, Corin | 6-0,6-1 |
| ITF Women Hammamet | 2018/02/03 09:00 | Abid, Imen v Biba, Adele Diana | 7-5,6-1 |
| ITF Women Hammamet | 2018/01/08 08:30 | Abid, Imen v Bevione, Bianca | 0-6,1-6 |