Jack Sock huge forehand return in double at London's ATP Finals.

Grigor Dimitrov's superb backhand passing shot against Marin Cilic in Paris.

Big service and big inside out forehand attack from John Isner. But Novak Djokovic finds the balance and the precision to deliver a perfect lob and win the point.

Watch the highlights of Andrey Rublev beating Emil Ruusuvuori for the title ? in Hong Kong.

Highlights of Novak Djokovic vs Aleksandr Nedovyesov in Davis Cup 2016 first round between Serbia and Kazakhstan.

Radek Stepanek hits the Shot of the Day on Saturday in 2016 Davis Cup first round. An improbable smash during his double with Tomas Berdych against Philipp Kohlschreiber et Philipp Petzschner.