Perfect shot from Roger Federer who mystifies Filip Krajinovic with this incredible backhand at Indian Wells

Roger Federer fires two huge backhands against Juan Martin Del Potro in Shanghai.

Bethanie Mattek-Sands very bad knee injury in Wimbledon against Sorana Cirstea.

Roger Federer hits behind-the-back magic volley in Miami against Thanasi Kokkinakis.

Break point for Tomas Berdych who takes his chance and comes to the net . His sliced backhand approach is perfect , but Djokovic finds the response with a masterclass forehand passing shot.