Stadium: Court 4 Round: 54 Ground: Clay
| ITF W60 Hechingen | 2019/08/06 10:55 | Natalia Siedliska v Tayisiya Morderger | 2-6,4-6 |
| ITF W25 Darmstadt | 2019/06/24 12:15 | Natalia Siedliska v Tayisiya Morderger | 6-7,1-6 |
| ITF Women Rotterdam | 2018/08/24 08:00 | Tayisiya Morderger v Natalia Siedliska | 6-1,4-6,1-6 |
| ITF W40 Arequipa | 2023/08/16 14:20 | Victoria Muntean v Natalia Siedliska | 6-4,6-3 |
| ITF W100 Maspalomas | 2023/08/09 08:30 | Daniela Seguel v Natalia Siedliska | 6-4,6-0 |
| ITF W100 Maspalomas | 2023/08/07 08:30 | Natalia Siedliska v Maria Jose Portillo Ramirez | 6-3,6-1 |
| ITF W100 Maspalomas | 2023/08/06 08:25 | Natalia Siedliska v Bibiane Schoofs | 6-2,6-4 |
| ITF W60 Olomouc | 2023/07/20 10:15 | Leyre Romero Gormaz v Natalia Siedliska | 6-0,6-4 |
| ITF W60 Olomouc | 2023/07/18 07:50 | Lisa Pigato v Natalia Siedliska | 6-2,4-6,4-6 |
| ITF W60 Olomouc | 2023/07/17 09:00 | Natalia Siedliska v Arianna Zucchini | 6-1,6-1 |
| ITF W60 Olomouc | 2023/07/16 10:55 | Natalia Siedliska v Martina Marusinova | 6-0,6-3 |
| ITF W40 Oldenzaal | 2023/08/29 10:30 | Vivian Wolff v Tayisiya Morderger | 6-1,6-2 |
| ITF W40 Oldenzaal | 2023/08/28 13:00 | Verena Meliss v Tayisiya Morderger | 2-6,0-6 |
| ITF W60 Prerov | 2023/08/21 14:15 | Diletta Cherubini v Tayisiya Morderger | 6-3,6-0 |
| ITF W40 Wroclaw | 2023/08/14 08:00 | Tatiana Pieri v Tayisiya Morderger | 6-4,6-3 |
| ITF W40 Wroclaw | 2023/08/13 13:30 | Karolina Jaskiewicz v Tayisiya Morderger | 1-6,2-6 |
| WTA Kozerki | 2023/08/06 09:00 | Tayisiya Morderger v Anna Siskova | 3-6,1-6 |
| WTA Prague | 2023/07/30 10:50 | Elvina Kalieva v Tayisiya Morderger | 6-2,6-3 |
| WTA Prague | 2023/07/29 10:45 | Tayisiya Morderger v Katarina Zavatska | 6-4,3-6,6-4 |