Stadium: Court 7
| Eastern European Championship Women | 2020/07/08 10:00 | Piter, Katarzyna v Bonic, Barbara | 6-0,6-0 |
| Eastern European Championship Women | 2020/07/08 10:00 | Piter, Katarzyna v Bonic, Barbara | 6-0,6-0 |
| Eastern European Championship Women | 2020/07/03 12:00 | Kovinic, Danka v Piter, Katarzyna | 6-2,6-4 |
| Eastern European Championship Women | 2020/07/02 11:55 | Piter, Katarzyna v Bojana Marinkovic | 6-0,6-1 |
| Eastern European Championship Women | 2020/06/30 09:20 | Piter, Katarzyna v Joksovic, Doroteja | 6-2,6-3 |
| Eastern European Championship Women | 2020/06/29 14:00 | Piter, Katarzyna v Basak Eraydin | 6-1,6-0 |
| Polish National Tour Women | 2020/06/23 08:00 | Piter, Katarzyna v Martyna Kubka | 2-6,1-6 |
| Polish National Tour Women | 2020/06/22 10:00 | Piter, Katarzyna v Kubacha, Zuzanna | 6-0,6-1 |
| Polish National Tour Women | 2020/06/21 17:00 | Piter, Katarzyna v Saska, Wiktoria | 6-0,6-1 |
| Eastern European Championship Women | 2020/07/08 10:00 | Piter, Katarzyna v Bonic, Barbara | 6-0,6-0 |
| Eastern European Championship Women | 2020/07/02 08:00 | Nefisa Berberovic v Bonic, Barbara | 6-4,6-2 |
| Eastern European Championship Women | 2020/06/30 08:00 | Natalija Stevanovic v Bonic, Barbara | 1-6,7-5,6-3 |
| Eastern European Championship Women | 2020/06/29 08:00 | Isabella Shinikova v Bonic, Barbara | 6-2,6-0 |
| Vitoria-Gasteiz, Singles W-ITF-ESP-14A | 2019/07/25 10:55 | Rosca, Ioana Loredana v Bonic, Barbara | 6-3,6-4 |
| Vitoria-Gasteiz, Singles W-ITF-ESP-14A | 2019/07/24 12:35 | Pitak, Aleksandra v Bonic, Barbara | 4-6,4-6 |
| Vitoria-Gasteiz, Singles W-ITF-ESP-14A | 2019/07/24 10:00 | Pitak, Aleksandra v Bonic, Barbara | 4-6,4-6 |
| ITF W15 Prokuplje | 2019/07/10 14:00 | Kovac, Jelena v Bonic, Barbara | 3-6,6-2,6-0 |