Martina Hingis, born September 30, 1980 in Košice, Czechoslovakia, is a Swiss former pro tennis player. She became the youngest Grand Slam champ of the 20th century and hit world number one in both singles and doubles.
Hingis grabbed five Grand Slam singles titles and thirteen in doubles. She hung up her racket for good in 2017 after a killer career that landed her in the International Tennis Hall of Fame.
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