| Polish National Tour Women | 2020/06/18 15:00 | Katarzyna Piter v Aleksandra Wierzbowska | 7-6,7-6 |
| Eastern European Championship Women | 2020/07/10 12:50 | Katarzyna Piter v Mihaela Djakovic | 6-2,5-7,6-2 |
| Eastern European Championship Women | 2020/07/09 19:25 | Viktoriya Tomova v Katarzyna Piter | 3-6,6-3,6-3 |
| Eastern European Championship Women | 2020/07/08 12:00 | Katarzyna Piter v Barbara Bonic | 6-0,6-0 |
| Eastern European Championship Women | 2020/07/08 10:00 | Katarzyna Piter v Barbara Bonic | 6-0,6-0 |
| Eastern European Championship Women | 2020/07/03 12:00 | Danka Kovinic v Katarzyna Piter | 6-2,6-4 |
| Eastern European Championship Women | 2020/07/02 11:55 | Katarzyna Piter v Bojana Marinkovic | 6-0,6-1 |
| Eastern European Championship Women | 2020/06/30 09:20 | Katarzyna Piter v Doroteja Joksovic | 6-2,6-3 |
| Eastern European Championship Women | 2020/06/29 14:00 | Katarzyna Piter v Basak Eraydin | 6-1,6-0 |
| Polish National Tour Women | 2020/06/21 18:00 | Aleksandra Wierzbowska v Anastasiya Shoshyna | 4-6,6-7 |
| Polish National Tour Women | 2020/06/21 11:55 | Karolina Jaskiewicz v Aleksandra Wierzbowska | 4-6,2-6 |
| Polish National Tour Women | 2020/06/18 15:00 | Katarzyna Piter v Aleksandra Wierzbowska | 7-6,7-6 |