Antun Stipančić was born in Duga Resa, a small industrial town in central Croatia's Karlovac County (at the time of his birth, and until summer-autumn 1991, Croatia was one of six republics constituting Yugoslavia). His family of five — father Ivan, a janitor at the football club, mother Franca and two younger brothers, Marijan and Ivica — had a difficult time trying to make ends meet. They lived in very modest circumstances in a damp apartment located at the football (soccer) playground which shared its location with the hall of the Table Tennis Club (TTC) "Duga Resa".