Round: 1
| Polska - National Tour - Kobiety | 2020/06/17 14:30 | Katarzyna Piter v Magdalena Hedrzak | 7-5,6-1 |
| ITF - Altenkirchen W25 | 2020/02/25 09:55 | Andreea Mitu v Katarzyna Piter | 3-6,7-5,6-2 |
| ITF - Cairo W60 | 2020/02/19 09:00 | Katarzyna Piter v Melanie Klaffner | 4-6,6-1,2-6 |
| ITF - Cairo W60 | 2020/02/17 14:00 | Amanda Carreras v Katarzyna Piter | 3-6,1-6 |
| ITF - Cairo W60 | 2020/02/16 14:30 | Paula Kania-Chodun v Katarzyna Piter | 7-6,4-6,5-10 |
| ITF - Cairo W100 | 2020/02/11 11:00 | Katarzyna Piter v Linda Fruhvirtova | 6-2,1-6,2-6 |
| ITF - Cairo W100 | 2020/02/09 15:55 | Katarzyna Piter v Ana L De La Nuez | 6-3,6-3 |
| ITF - Mińsk W25 | 2019/11/15 07:00 | Katarzyna Piter v Lucia Bronzetti | 4-6,1-6 |