The Federer–Djokovic rivalry is between two professional tennis players, Roger Federer and Novak Djokovic. They have played each other 29 times, with Federer leading 16–13. The Federer–Djokovic rivalry is the largest rivalry in Grand Slam history with 11 matches played against each other. Federer leads on hard courts (both indoor and outdoor) and grass courts, and they are tied on clay courts. In terms of number of matches played, it ranks as the seventh largest rivalry in the Open Era. They have played a record of nine semifinals in Grand Slam and met at all four Slams.
Their 2011 French Open and 2010 and 2011 US Open semifinals are classified among the greatest matches in tennis history by the ATP.
They have reigned simultaneously as the two best players in the world since July 2012, when Federer defeated Djokovic in the Wimbledon semifinals and dethroned him as world #1.