Watch how Ivan Dodig knocked out Marcelo Melo in Miami's double.

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

Frances Tiafoe couldn't hit a drop volley better than this against Denis Shapovalov in Miami.

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

Dominika Cibulkova hits a superb drop shot to win this point against Garbine Muguruza.