World No. 1 Novak Djokovic beat Florian Mayer of Germany (6-4, 6-1, 6-4) and secured his semifinal spot in the Wimbledon men's singles event. In the semifinal, Djokovic will play against Swiss Roger Federer who eliminated Russia's Mikhail Youzhny. The Serb and the Swiss have played 26 times so far, with Federer leading with 14:12.