| Poland Ekstaklasa Women | 01/05 15:19 | - | Slifirczyk, Katarzyna v Weronika Luba-Arnista | W | 3-0 | |
| TT Star Series | 03/17 16:16 | - | Ciobanu, Irina v Slifirczyk, Katarzyna | L | 3-0 | |
| TT Star Series | 03/13 14:15 | - | Slifirczyk, Katarzyna v Anastasiya Dymytrenko | L | 2-3 | |
| Poland Ekstaklasa Women | 12/12 14:16 | - | Slifirczyk, Katarzyna v Franaszczuk, Klaudia | W | 3-2 | |
| TT Star Series | 09/05 13:03 | - | Sikorska, Magdalena v Slifirczyk, Katarzyna | L | 3-1 | |
| Poland Ekstaklasa Women | 02/23 17:01 | - | Miklaszewska, Maja v Slifirczyk, Katarzyna | W | 1-3 | |
| Poland Ekstaklasa Women | 02/08 16:20 | - | Kisel, Darya v Slifirczyk, Katarzyna | W | 1-3 | |
| Poland Ekstaklasa Women | 10/16 15:32 | - | Slifirczyk, Katarzyna v Magdalena Plotka | W | 3-0 | |
| Poland Ekstaklasa Women | 02/02 14:30 | - | Slifirczyk, Katarzyna v Ying Han | L | 2-3 | |
| Poland Ekstaklasa Women | 02/02 13:35 | - | Slifirczyk, Katarzyna v Pavlovich, Viktoria | L | 0-3 | |
| Poland Ekstaklasa Women | 01/10 19:53 | - | Anna Monika Zelinska v Slifirczyk, Katarzyna | L | 3-2 | |
| Poland Ekstaklasa Women | 01/10 17:17 | - | Luqi Liu v Slifirczyk, Katarzyna | L | 3-2 | |
| Poland Ekstaklasa Women | 01/05 17:02 | - | Xuan Goi Rui v Slifirczyk, Katarzyna | L | 3-0 | |
| Polish Grand Prix Women | 11/23 15:37 | - | Slifirczyk, Katarzyna v Angelika Janik | W | 3-1 | |
| Poland Ekstaklasa Women | 10/23 15:06 | - | Slifirczyk, Katarzyna v Ma, W. | L | 0-3 | |
| Poland Ekstaklasa Women | 09/27 14:32 | - | Slifirczyk, Katarzyna v Luki Liu | L | 1-3 | |
| Poland Ekstaklasa Women | 09/13 14:23 | - | Slifirczyk, Katarzyna v Dominika Wolowiec | L | 2-3 | |
| Paraguay Open U21 Women | 07/18 08:30 | - | Mathieu, Malaurie v Slifirczyk, Katarzyna | W | 2-3 | |
| République tchèque - Extraleague | 04/03 16:40 | - | Slifirczyk, Katarzyna v Stefanska, Kinga | L | 1-3 | |
| République tchèque - Extraleague | 03/23 16:21 | - | Monika Tereskiewicz v Slifirczyk, Katarzyna | W | 0-3 | |
| République tchèque - Extraleague | 03/13 17:00 | - | Agnieszka Kaczmarek v Slifirczyk, Katarzyna | W | 1-3 | |
| République tchèque - Extraleague | 03/08 15:57 | - | Slifirczyk, Katarzyna v Zhao, Ziyi | W | 3-2 | |
| République tchèque - Extraleague | 02/01 16:29 | - | Slifirczyk, Katarzyna v Katarzyna Wegrzyn | W | 3-2 | |
| République tchèque - Extraleague | 01/10 16:38 | - | Slifirczyk, Katarzyna v Dong Rui Fang | L | 2-3 | |
| Challenger Ochsenhausen | 09/30 10:22 | - | Slifirczyk, Katarzyna v Gobel, Jessica | L | 0-3 | |
| Challenger Ochsenhausen | 09/30 07:43 | - | Slifirczyk, Katarzyna v Marija Galonja | L | 2-3 | |
| Challenger Ochsenhausen | 09/29 11:43 | - | Slifirczyk, Katarzyna v Remzi, Sibel | L | 0-3 | |
| Challenger Ochsenhausen | 09/29 08:30 | - | Slifirczyk, Katarzyna v Kucerova, Aneta | L | 2-3 | |
| Challenger Ochsenhausen | 09/28 09:10 | - | Slifirczyk, Katarzyna v Yoshida, Mitsuki | L | 1-3 | |
| Challenger Ochsenhausen | 09/28 06:16 | - | Slifirczyk, Katarzyna v Roksana Zalomska | L | 1-3 |