| ITF W25 Potchefstroom | 2020/03/10 10:40 | Fanny Stollar v Harmony Tan | 2-6,4-6 |
| ITF W25 Potchefstroom | 2020/03/04 07:00 | Fanny Stollar v Martina Caregaro | 6-7,7-5,3-6 |
| ITF W25 Launceston | 2020/02/04 01:30 | Mana Ayukawa v Fanny Stollar | 6-7,2-6 |
| ITF W60 Burnie | 2020/01/30 01:50 | Lizette Cabrera v Fanny Stollar | 7-6,5-7,6-2 |
| ITF W60 Burnie | 2020/01/28 03:50 | Fanny Stollar v Ya-Hsuan Lee | 7-6,6-2 |
| WTA Houston | 2019/11/13 17:00 | Fanny Stollar v Stefanie Voegele | 4-6,6-3,3-6 |
| WTA Houston | 2019/11/11 16:00 | Jovana Jaksic v Fanny Stollar | 4-6,3-6 |
| ITF W60 Las Vegas | 2019/11/07 19:20 | Fanny Stollar v Anhelina Kalinina | 7-6,1-6,4-6 |
| ITF W15 Heraklion | 2020/03/03 10:00 | Jessica Bouzas Maneiro v Natalia Siedliska | 6-1,6-3 |
| ITF 15 Antalya - Femenino | 2020/02/15 10:50 | Natalia Siedliska v Anita Husaric | 6-0,3-6,4-10 |
| ITF 15 Antalya - Femenino | 2020/02/14 13:10 | Natalia Siedliska v Lexie Stevens | 6-0,6-1 |
| ITF 15 Antalya - Femenino | 2020/02/07 07:00 | Natalia Siedliska v Oleksandra Oliynykova | 6-2,6-4 |
| ITF 15 Antalya - Femenino | 2020/02/06 12:00 | Natalia Siedliska v Nadine Keller | 5-7,7-5,6-1 |
| ITF 15 Antalya - Femenino | 2020/02/05 08:55 | Natalia Siedliska v Kamila Kerimbayeva | 6-1,6-2 |
| ITF W25 Malibú | 2020/01/13 18:30 | Natalia Siedliska v Skyler M G Grishuk | 6-3,4-6,10-8 |
| ITF W15 Heraklion | 2019/11/26 08:00 | Celia Cervino Ruiz v Natalia Siedliska | 5-7,6-1,6-3 |