All Tennis Players How Many Grand Slams Has Goran Ivanisevic Won? Goran Ivanišević (Croatian pronunciation: [ɡǒran iʋanǐːʃeʋitɕ]; born 13 September 1971) is a Croatian former professional tennis player.Goran Ivanisevic has won 1 Grand Slam. FacebookTwitterEmail How Many Grand Slams Has Madison Keys Won? How Many Grand Slams Has Jannik Sinner Won? How Many Majors Has John Isner Won?