| Poland Ekstaklasa Women | 2019/09/27 15:02 | Slazak, Julia v Miklaszewska, Maja | W | 0-3 |
| Poland Ekstaklasa Women | 2019/11/16 15:04 | Katarzyna Grzybowska-Franc v Miklaszewska, Maja | L | 3-1 |
| Poland Ekstaklasa Women | 2019/10/23 15:59 | Daria Luczakowska v Miklaszewska, Maja | L | 3-1 |
| ITTF Challenge, Polish Open 2019, WS, Group Stage | 2019/10/16 15:05 | Nikoleta Puchovanova v Miklaszewska, Maja | L | 3-1 |
| Poland Ekstaklasa Women | 2019/09/27 15:02 | Slazak, Julia v Miklaszewska, Maja | W | 0-3 |
| 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 |
| Poland Ekstaklasa Women | 2020/01/05 16:22 | Dominika Wolowiec v Slazak, Julia | L | 3-1 |
| Poland Ekstaklasa Women | 2019/11/15 16:15 | Slazak, Julia v Sandra Wabik | W | 3-0 |
| Poland Ekstaklasa Women | 2019/10/23 15:37 | Slazak, Julia v Aleksandra Michalak | L | 2-3 |
| Oman Open U21 Women | 2019/10/17 08:50 | Karoline Mischek v Slazak, Julia | W | 2-3 |
| Oman Open U21 Women | 2019/10/16 08:40 | Slazak, Julia v Nikoleta Puchovanova | W | 3-0 |
| Poland Ekstaklasa Women | 2019/09/27 15:02 | Slazak, Julia v Miklaszewska, Maja | L | 0-3 |
| 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 |