ATP world tour finals

Switzerland's Roger Federer returns the ball to Great Britain's Andy Murray (not pictured), during their singles tennis match, on the third day of the ATP World Tour Finals, at the O2, in south-east London on November 23, 2010. Federer was in sublime form as he moved closer to a place in the semi-finals of the ATP World Tour Finals with a 6-4, 6-2 win over Murray. AFP