<Li> Best Grass court winning percentage: 86.66% (305--39). </Li> <Li> Best Carpet court winning percentage: 89.99% (576--58). </Li> <Li> In 2006, Navratilova became the oldest - ever Grand Slam tournament champion when she won the United States Open (U.S. Open) mixed doubles title . At that time she was just over a month away from her 50th birthday (October 18). Her partner, Bob Bryan, was born in 1978, four years after she won her first Slam title . </Li> <Li> The only man or woman to win 8 different tournaments at least 7 times . </Li>

Oldest female tennis player to win a major