Monica Seles was a natural born citizen of Yugoslavia and then gained citizenship in the United States of America.
Monica Seles . 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 the United States of America .