Sport
Federer back in the groove at Tour Finals
9 years agoSwitzerland's Roger Federer returns to US Jack Sock during their men's singles tennis match on Day One of the ATP World Tour Finals tennis tournament at the O2 Arena in London on November 12, 2017. Adrian DENNIS / AFP
Roger Federer made a strong start to his bid to cap his golden year with a seventh ATP Tour Finals title as the Swiss star defeated Jack Sock 6-4, 7-6 (7/4) on Sunday.
