All Tennis Players How Many Grand Slams Has Malcolm Whitman Won? Malcolm “Mal” Douglass Whitman (March 15, 1877 – December 28, 1932) was an American tennis player.Malcolm Whitman has won 3 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?
