All Tennis Players How Many Grand Slams Has Hana Mandlíková Won? Hana Mandlíková (born 19 February 1962) is a former professional tennis player.Hana Mandlíková has won 4 Grand Slams. FacebookTwitterEmail How Many Grand Slams Has Madison Keys Won? How Many Grand Slams Has Jannik Sinner Won? How Many Majors Has John Isner Won?