Two superb rallies between Roger Federer and Alexander Zverev at the end of the first of their round robin match in London (ATP Finals - Masters).

Jack Sock slides incredibly to get this ball and make the difference against Marin Cilic in 3rd set tie-breaker in London (ATP Finals - Masters).

David Goffin shocks Rafael Nadal with a this magic pass Nadal-like in London (ATP Finals - Masters). Curved just what it needs to come back in court limits.

Despite his knee injury, Nadal strikes this enormous backhand passing shot against David Goffin in London (ATP Finals - Masters).

Amazing drop volley from Ivan Dodig in double with Marcel Granollers against Marcelo Melo and Lukasz Kubotat at the ATP Finals in London.