| Poland Ekstaklasa Women | 2019/09/13 15:09 | Slazak, Julia v Sandra Kozyol | W | 3-1 |
| Czech Open Women | 2019/08/20 11:15 | Slazak, Julia v Chia Hsuan Lin | L | 1-4 |
| Czech Open Women | 2019/08/20 11:15 | Slazak, Julia v Lin, Chia-Hsuan | L | 1-4 |
| Croatia Open U21 Women | 2019/05/15 07:00 | Slazak, Julia v Andrea Pavlovic | W | 3-1 |
| Croatia Open U21 Women | 2019/05/14 12:20 | Ojio, Haruna v Slazak, Julia | L | 3-0 |
| République tchèque - Extraleague | 2019/03/08 18:30 | Slazak, Julia v Tin-Tin Ho | L | 3-4 |
| République tchèque - Extraleague | 2019/02/07 16:28 | Anna Wegrzyn v Slazak, Julia | W | 2-3 |
| Qatar Open 2019, MS | 2019/01/12 14:51 | Dyszkiewicz, Gabriela v Slazak, Julia | W | 2-3 |
| République tchèque - Extraleague | 2019/03/13 15:07 | Miklaszewska, Maja v Paulina Krzysiek | L | 0-3 |
| République tchèque - Extraleague | 2019/02/02 15:34 | Miklaszewska, Maja v Karolina Lalak | L | 0-3 |
| Qatar Open 2019, MS | 2019/01/09 15:58 | Sandra Wabik v Miklaszewska, Maja | L | 3-2 |
| Qatar Open XD | 2017/10/04 13:45 | Truksova, Lucia v Miklaszewska, Maja | L | 4-3 |