Stadium: Court 11 Round: 25 Ground: Hardcourt outdoor
| ITF Women Ortisei | 2018/12/20 11:05 | Natalia Siedliska v Veronika Erjavec | 7-6,6-1 |
| ITF Women Ortisei | 2018/12/19 11:00 | Natalia Siedliska v Schultheiss, Carmen | 6-2,6-2 |
| ITF Women Ortisei | 2018/12/17 15:05 | Natalia Siedliska v Proese, Natalie | 7-5,4-6,6-1 |
| Sharm El Sheikh, Singles W-WITF-EGY-09A | 2018/11/21 09:15 | Natalia Siedliska v Daria Kuczer | 7-6,3-6,1-6 |
| ITF Women Muzaffarnagar | 2018/11/13 06:40 | Natalia Siedliska v Melanie Klaffner | 6-7,1-6 |
| ITF Women Heraklion | 2018/11/07 09:15 | Natalia Siedliska v Argyrokastriti, Marianne | 4-6,2-6 |
| ITF Women Toronto | 2018/10/31 16:40 | Katherine Sebov v Natalia Siedliska | 6-3,6-2 |
| ITF Women Toronto | 2018/10/29 14:00 | Kinard, Tori v Natalia Siedliska | 1-6,4-6 |
| Taipei, Taipei Chinois | 2018/11/15 10:45 | Zhang, Yuxuan v Diatchenko, Vitalia | 7-5,3-6,2-6 |
| Taipei, Taipei Chinois | 2018/11/14 06:35 | Zhang, Yuxuan v Jia-Jing Lu | 6-3,6-2 |
| Taipei, Taipei Chinois | 2018/11/12 04:05 | Karman Kaur Thandi v Zhang, Yuxuan | 2-6,2-6 |
| Taipei, Taipei Chinois | 2018/11/11 05:15 | Yang, Ya-Yi v Zhang, Yuxuan | 0-6,1-6 |
| Shenzhen, Simples W-WITF-CHN-02A | 2018/11/06 06:30 | Elena Rybakina v Zhang, Yuxuan | 6-0,6-1 |
| ITF Women Liuzhou | 2018/10/31 07:20 | Zhang, Yuxuan v Xinyu Wang | 4-6,3-6 |
| Tianjin, Chine | 2018/10/11 06:05 | Zhang, Yuxuan v Caroline Garcia | 3-6,4-6 |
| Tianjin, Chine | 2018/10/09 07:30 | Zhang, Yuxuan v Irina-Camelia Begu | 7-5,6-3 |