Stadium: CC Round: 54 Ground: Clay
| ITF Women Rotterdam | 2018/08/24 08:00 | Tayisiya Morderger v Natalia Siedliska | 6-1,4-6,1-6 |
| ITF W25 Darmstadt | 2019/06/24 08:00 | Natalia Siedliska v Natalie Proese | 6-3,3-6,16-14 |
| ITF W25 Hong Kong | 2019/05/28 10:25 | Natalia Siedliska v Yui Chikaraishi | 3-6,2-6 |
| ITF W25 Karuizawa | 2019/05/21 06:20 | Natalia Siedliska v Xiaodi You | 2-6,6-4,6-4 |
| ITF W25 Singapore | 2019/05/16 03:55 | Valeria Savinykh v Natalia Siedliska | 7-6,6-1 |
| ITF W25 Singapore | 2019/05/15 03:25 | Nikita Uberoi v Natalia Siedliska | 1-6,4-6 |
| ITF W25 Osprey | 2019/04/24 14:30 | Natalia Siedliska v Victoria Rodriguez | 7-6,2-6,6-2 |
| ITF W25 Osprey | 2019/04/23 16:10 | Anastasia E Nefedova v Natalia Siedliska | 6-1,5-7,10-12 |
| ITF W25 Osprey | 2019/04/22 14:30 | Elizabeth K Bagerbaseh v Natalia Siedliska | 3-6,1-6 |
| ITF W25 Darmstadt | 2019/06/24 08:00 | Laura Radakovic v Tayisiya Morderger | 0-6,2-6 |
| ITF W25 Klosters | 2019/06/17 12:30 | Tayisiya Morderger v Anita Husaric | 5-7,4-6 |
| ITF W25 Klosters | 2019/06/17 07:00 | Tayisiya Morderger v Lisa Kung | 6-4,6-1 |
| ITF W25 Essen | 2019/05/27 12:05 | Anastasiya Komardina v Tayisiya Morderger | 6-0,6-2 |
| ITF W25 Essen | 2019/05/27 09:15 | Antonia Balzert v Tayisiya Morderger | 0-6,1-6 |
| ITF W25 Sunderland | 2019/04/08 17:15 | Eleonora Molinaro v Tayisiya Morderger | 7-6,6-4 |
| ITF W25 Bolton | 2019/04/01 13:00 | Laura Robson v Tayisiya Morderger | 6-2,7-5 |
| ITF W15 Le Havre | 2019/03/21 09:30 | Yana Morderger v Tayisiya Morderger | 6-4,6-3 |