"Five-time Grand Slam singles champion Martina Hingis, 32, was elected to the <a href=""http://www.tennisfame.com/class-of-2013-martina-hingis-thelma-coyne-long-cliff-drysdale-charlie-pasarell-ion-tiriac"">International Tennis Hall of Fame</a> on Monday. Hingis won 15 major titles, including nine in women's doubles and one in mixed. The first came at Wimbledon in women's doubles in 1996, at the age of 15 years, 9 months, making her the youngest Grand Slam event champion in  history."