The greatest rivalry in tennis history, man or women, is undoubtably Evert vs Navratilova. One of the many things that made it such a great rivalry was the contrasting styles. The emotional serve and volley master Navratilova, the supreme athlete, the nervous choker at times who overcome her internal demons over the year vs the queen of the baseline and consistency, the methodical and ever composed Chris Evert. They were complete opposites in virtually everyway, yet both so brilliant, and brought such a contrast in styles. There have been other great rivalries past too, Connors vs Borg, Connors vs McEnroe, Laver vs Rosewall, Court vs King, Evert vs King, many with contrasting styles as well. It seems there are few great rivalries to emerge in to emerge in the last 20 years though with players of contrasting playing styles. The best ones in that time would probably be Sampras vs Agassi, Sampras vs Courier, Hingis vs Davenport, and Serena ve Henin. The others: Graf vs Seles- Very similar styles. Also marred by the stabbing and a lack of head to head meetings, as they were never playing their best tennis at the same time. Federer vs Nadal- Enough has been said on this board already so I wont bother. Nadal vs Djokovic- Even more similar styles. Grindfests which dont bring out the best in either player. Venus vs Serena- Truly carbon copy games in many respects, and hard for both players being loving sisters who practiced for years and know each others games inside out. Serena vs Sharapova- Basically Serena vs a lesser version of herself who after some early resistence she can squash like a bug, no rivalry. Henin vs Sharapova- Had promise but never really went anywhere for any length of time.