In 2013, Bednarek made his Ekstraklasa debut, at the age of 17 years old, for Lech Poznań against Piast Gliwice, in an eventual 2–0 win for the home side.
Mnamo 2013, Bednarek alicheza mechi yake ya kwanza ya Ekstraklasa, akiwa na umri wa miaka 17, kwa Lech Poznań dhidi ya Piast Gliwice, katika ushindi wa 2-0 kwa timu ya nyumbani.