Stadium: Court 2
| ITF - W15 Monastir | 2020/03/08 11:00 | Isabella Kruger v Jaskiewicz, Karolina | 6-3,6-3 |
| ITF - W15 Monastir | 2020/03/04 11:35 | Jaskiewicz, Karolina v Katarina Kuzmova | 1-6,2-6 |
| ITF - W15 Monastir | 2020/03/02 08:30 | Victoria Mikhaylova v Jaskiewicz, Karolina | 6-7,6-7 |
| Stockholm, Singles W-ITF-SWE-05A | 2019/10/21 09:25 | Wikander, Louise v Jaskiewicz, Karolina | 6-3,6-4 |
| Kaposvar, Singles Qualifying W-ITF-HUN-06A | 2019/09/24 08:00 | Duca, Gabriela v Jaskiewicz, Karolina | 6-2,6-7,10-7 |
| Kaposvar, Singles Qualifying W-ITF-HUN-06A | 2019/09/23 11:00 | Jaskiewicz, Karolina v Farbas, Reka | 4-6,6-4,10-6 |
| Kaposvar, Singles Qualifying W-ITF-HUN-06A | 2019/09/22 11:00 | Tania Munteanu v Jaskiewicz, Karolina | 3-6,0-6 |
| ITF W25 Frydek Mistek | 2019/09/09 12:00 | Veronika Erjavec v Jaskiewicz, Karolina | 6-1,6-0 |
| Polish National Tour Women | 2020/06/18 15:00 | Piter, Katarzyna v Wierzbowska, Aleksandra | 7-6,7-6 |