Novak Djokovic of Serbia reacts after losing a point against Roger Federer of Switzerland, during their semifinal match of the Monte Carlo Tennis Masters tournament, in Monaco, Saturday, April, 19, 2014. Federer won 7-6, 6-2. (AP Photo/Claude Paris)
Novak Djokovic of Serbia reacts after losing a point against Roger Federer of Switzerland, during their semifinal match of the Monte Carlo Tennis Masters tournament, in Monaco, Saturday, April, 19, 2014. Federer won 7-6, 6-2. (AP Photo/Claude Paris)
Roger Federer of Switzerland and Novak Djokovic of Serbia go to shake hands after their semifinal match of the Monte Carlo Tennis Masters tournament in Monaco, Saturday, April 19, 2014. Federer won 7-6 6-2. (AP Photo/Michel Euler)
Roger Federer of Switzerland celebrates after defeating Novak Djokovic of Serbia, in their semifinal match of the Monte Carlo Tennis Masters tournament, in Monaco, Saturday, April, 19, 2014. Federer won 7-6, 6-2. (AP Photo/Claude Paris)
Novak Djokovic of Serbia serves the ball to Roger Federer of Switzerland during their semifinal match of the Monte Carlo Tennis Masters tournament in Monaco, Saturday, April 19, 2014. Federer won 7-6 6-2. (AP Photo/Michel Euler)