Martina Hingis is an athlete.
Martina Hingis ( born 30 September 1980 ) is a Czechoslovak-born Swiss professional tennis player who spent a total of 209 weeks as the singles world No. 1 . She has won five Grand Slam singles titles , twelve Grand Slam women 's doubles titles , winning a calendar-year doubles Grand Slam in 1998 , and five Grand Slam mixed doubles titles ; for a combined total of twenty-two major titles . Before ligament injuries in both ankles forced her to withdraw temporarily from professional tennis in 2002 , at the age of 22 , she had won 40 singles titles and 36 doubles titles and , according to Forbes , had been the highest-paid female athlete in the world for five consecutive years , 1997 to 2001 . Widely considered an all-time tennis great , Hingis was ranked by Tennis magazine in 2005 as the 8th-greatest female player of the preceding 40 years .