Martina Navratilova, born Martina Šubertová; October 18, 1956, is a retired Czech American tennis player and a former World No. 1. Navratilova won 18 Grand Slam singles titles, 31 major women's doubles titles (an all-time record), and 10 major mixed doubles titles. She reached the Wimbledon singles final 12 times, including nine consecutive years from 1982 through 1990, and won the women's singles title at Wimbledon a record nine times. She and King each won 20 Wimbledon titles, an all-time record. Navratilova is one of just three women to have accomplished a career Grand Slam in singles, women's doubles, and mixed doubles (called the Grand Slam "boxed set") a record she shares with Margaret Court and Doris Hart. Navratilova is the only person of either sex to have won eight different tournaments at least seven times.