All Tennis Players How Many Grand Slams Has Stan Wawrinka Won? Stanislas “Stan” Wawrinka (born 28 March 1985) is a Swiss professional tennis player.Stan Wawrinka 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?
