All Tennis Players How Many Grand Slams Has Thelma Coyne Long Won? Thelma Dorothy Coyne Long (née Coyne; 14 October 1918 – 13 April 2015) was an Australian tennis player.Thelma Coyne Long has won 2 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?
