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

Novak Djokovic do it like Mansour Bahrami against the young Kyle Edmund in Miami. Ball right in the pocket.

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.

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

Kokkinakis-Harrison handshake and some chatter in Cincinnati