Ernest Otton Wilimowski, nicknamed "Ezi", was a footballer who played as a forward. He ranks among the best goalscorers in the history of both the Poland national team and Polish club football. After re-taking German citizenship following the invasion of Poland, he also played for the Germany national team.

Poland Ekstraklasa, meaning "Extra Class" in Polish, named PKO Bank Polski Ekstraklasa since the 2019–20 season due to its sponsorship by PKO Bank Polski, is the top Polish professional league for men's association football teams.