Martina Navratilova is a Czechoslovak-born American former professional tennis player and coach. In 2005, Tennis magazine selected her as the greatest female tennis player for the years 1975 through 2005 and she is considered one of the best female tennis players of all time. Billie Jean King, herself a former World #1 player, said in 2006 that Navratilova is "the greatest singles, doubles, and mixed doubles player who's ever lived."

A champion on and off the court, Navratilova is not only a tennis legend, but an inspirational leader who demonstrates wit, candor, and sheer motivation. Arguably the best tennis player ever to play the game, Navratilova has amassed an unmatched number of professional records during a career that spanned an amazing four decades, while proving herself to be one of the most intriguing, outspoken, and respected figures of the 20th and 21st centuries.

During her career, Navratilova won an astonishing 59 Grand Slam titles, including 18 singles, 31 women's doubles and 10 mixed doubles. She is one of only three people who have won all three titles (singles, doubles, and mixed doubles) at each of the four Grand Slam events.

Navratilova is a staunch supporter of women's issues, gay rights, ethical treatment of animals, environmental protection, and AIDS research. She is also a founder of the Rainbow Card credit card program and the non-profit Rainbow Endowment. Since its inception in 1995, the Rainbow Endowment has been one of the strongest supporters of gay and lesbian charities in North America, having given grants in excess of $2 million dollars. On April 7, 2010, Navratilova announced that she was being treated for breast cancer.

Through her television appearances, speaking engagements and tennis commentaries, Navratilova has become as popular for her humor as for her forthrightness and determination. In addition, she is an accomplished writer of both fiction and non-fiction. Her books include 2006's "Shape Your Self: My 6-Step Diet and Fitness Plan to Achieve the Best Shape of Your Life" and her 1985 autobiography, the eponymous "Martina."

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