All Tennis Players How Many Grand Slams Has Jelena Ostapenko Won? Jeļena Ostapenko (born 8 June 1997), also known as Aļona Ostapenko, is a Latvian professional tennis player.Jelena Ostapenko has won 1 Grand Slam. FacebookTwitterEmail How Many Grand Slams Has Madison Keys Won? How Many Grand Slams Has Jannik Sinner Won? How Many Majors Has John Isner Won?
