This pair epitomized women's tennis in the 1970s and 80s. They each won 18 Grand Slam singles titles and earned career Grand Slams along the way.
![](http://images.csmonitor.com/csmarchives/2010/09/chris%26martina.jpg?alias=standard_900x600nc)
Mike Segar/Reuters
Tennis stars Martina Navratilova (l.) and Chris Evert talk before the women's finals match between Vera Zvonareva of Russia and Kim Clijsters of Belgium, during the US Open in New York, September 11.