Fudbalski klub Radnički 1923 ( Serbian Cyrillic : Фудбалски клуб Рaднички 1923 ), historically known as Radnički Kragujevac ( Serbian Cyrillic : Рaднички Крагујевац ), is a professional football club from Kragujevac , Serbia making up the major part of the Radnički Kragujevac Sports Society. It competes in the Serbian SuperLiga , top tier of national football league system .
