They are set to face each other in Slugfest 4.
The bout is scheduled for a standard 3-round SF fight.
The fight is organized by the SlugFest (SF).
The fight is scheduled to take place on June 6, 2015
The fight is set to start at 17:30 GMT.
The venue for the fight is in Hala MG Sport.
They are competing in the UFC Lightweight.
Maciej Kazieczko represents Poland, and Matěj Mordačík represents Slovakia.
The fight is a highly anticipated championship bout in the UFC Lightweight.