Monica Seles (Hungarian: Szeles Mónika, Serbian: Моника Селеш, Monika Seleš, pronounced [/sɛlɛʃ/], born December 2, 1973) is a former World No. 1 professional tennis player and a member of the International Tennis Hall of Fame. She was born in Novi Sad, Yugoslavia (now Serbia) to Hungarian parents and became a naturalized United States citizen in 1994. According to published reports in Canadian and Hungarian news media (including two newspapers of record), she also received Hungarian citizenship  in June 2007.   She won nine Grand Slam singles titles, winning eight of them while a citizen of Yugoslavia and one while a citizen of the United States. She became the youngest-ever champion at the 1990 French Open at the age of 16. She was the World No. 1 player in the women\s game during 1991 and 1992, but in 1993, she was forced out of the sport for two
Who is the greatest grass court player?