Renée Richards (born Richard Raskind August 19, 1934) is a physician and professional tennis player.
In 1975 she underwent sex reassignment surgery.
In 1976 the United States Tennis Association denied her entrance into the U.S. Open. She challenged the ban, and the New York Supreme Court ruled in her favor in 1977.
Tennis career as Renée Richards
As Renée Richards, she subsequently played from 1977 to 1981, achieving a ranking in the low 20s.  She was ranked as high as 20th overall (in February 1979), and her highest ranking at the end of a year was 22nd (in 1977).
Her greatest successes on court were reaching the doubles final at the US Open in 1977, and winning the 35-and-over women's singles.  Richards was twice a semi-finalist in mixed doubles (with Ilie Nastase) at the U.S. Open.
She later coached Martina Navratilova to two Wimbledon wins.
WOW! That's amazing, I can just imagine if something like this happened today. It wouldn't even be close, the number 300 ranked man would rise quickly to the number 1 on the womens rankings...domination worse than anything imaginable.