All Tennis Players How Many Grand Slams Has Pete Sampras Won? Petros “Pete” Sampras (Greek: Πέτρος Σάμπρας; born August 12, 1971) is an American former world No. 1 tennis player.Pete Sampras won 14 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?
