Martina Navratilova
Called the greatest tennis player who ever lived by sports writer Bud Collins, Martina Navratilova won a record nine singles titles at Wimbledon and 59 majors titles in all. In doubles, she won 177 matches and, incredibly, won her last mixed doubles match at the U.S. Open in 2006 at age 49. Since defecting to the US from the former Czechoslovakia in 1975, the same year she turned pro, Navratilova has been an outspoken opponent of totalitarianism and a champion of female athletes, LGBT equality and animal rights. In April, she revealed she was being successfully treated for a non-life threatening form of breast cancer. -KL
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