Sania Mirza is an Indian professional tennis player. A former world No. 1 in the doubles discipline, she has won six Grand Slam titles in her career. From 2003 until her retirement from singles in 2013, she was ranked by the WTA as India's No. 1 player in both the categories. Throughout her career, Mirza has established herself as by far the most successful Indian women's tennis player ever and one of the highest-paid and most high-profile athletes in the country.