Monica Seles (/ˈsɛləs/; Hungarian: Szeles Mónika, Serbian: Моника Селеш, Monika Seleš, pronounced [ˈsɛlɛʃ], born December 2, 1973) is a former Yugoslav world no. 1 professional tennis player and a member of the International Tennis Hall of Fame. An ethnic Hungarian, she was born and raised in Novi Sad, SFR Yugoslavia. She became a naturalized American citizen in 1994 and also received Hungarian citizenship in June 2007. She won nine Grand Slam singles titles, eight of them while a citizen of Yugoslavia and the final as a citizen of United States of America. In 1990, Seles became the youngest-ever French Open champion at the age of 16. She went on to win eight Grand Slam singles titles before her 20th birthday and was the year-end World No. 1 in 1991 and 1992. However, on April 30, 1993, she was the victim of an on-court attack, when a man stabbed her in the back with a 9-inch (23 cm) long knife; Seles did not return to tennis for over two years. Though she enjoyed some success after rejoining the tour in 1995, including a fourth Australian Open title in 1996, she was unable to consistently reproduce her best form. She played her last professional match at the 2003 French Open, but did not officially retire until February 2008.

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