Wisła Płock Spółka Akcyjna ( Wisła Płock S.A. ), commonly referred to as Wisła Płock ( Polish pronunciation: [ˈviswa ˈpwɔt͡sk] ), is a Polish professional football club based in Płock , Masovian Voivodeship . They currently compete in the Ekstraklasa , the top tier of the Polish football league system .
