Roger Federer of Switzerland celebrates after winning against Milos Raonic of Canada in the singles group B match at the men’s ATP World Tour Finals tennis tournament at the O2 Arena in London, Britain, 09 November 2014. EPA/FACUNDO ARRIZABALAGA

Roger Federer of Switzerland serves against Milos Raonic of Canada in the singles group B match at the men’s ATP World Tour Finals tennis tournament at the O2 Arena in London, Britain, 09 November 2014. EPA/FACUNDO ARRIZABALAGA

Roger Federer of Switzerland returns the ball against Milos Raonic of Canada in the singles group B match at the men’s ATP World Tour Finals tennis tournament at the O2 Arena in London, Britain, 09 November 2014. EPA/FACUNDO ARRIZABALAGA

Roger Federer of Switzerland returns the ball against Milos Raonic of Canada in the singles group B match at the men’s ATP World Tour Finals tennis tournament at the O2 Arena in London, Britain, 09 November 2014. EPA/FACUNDO ARRIZABALAGA

Roger Federer of Switzerland celebrates after winning against Milos Raonic of Canada in the singles group B match at the men’s ATP World Tour Finals tennis tournament at the O2 Arena in London, Britain, 09 November 2014. EPA/FACUNDO ARRIZABALAGA

Roger Federer poses for photographers with two awards, the ATP World Tour Sportsmanship Award and the ATP World Tour Fans? Favourite Award, after winning against Milos Raonic of Canada in the singles group B match at the men’s ATP World Tour Finals tennis tournament at the O2 Arena in London, Britain, 09 November 2014. EPA/FACUNDO ARRIZABALAGA