Roger stretches to roll up Sock

Federer pressured by feisty American in Finals opener

LONDON - Whatever else happens to Jack Sock at the ATP Finals this week, his between-the-legs volley at 4-4 in the second set of his debut match will be part of the tournament highlight reel.

Unfortunately for Sock, Roger Federer was on the other side of the net and the American upstart's magic moment proved in vain as the Swiss maestro spun a backhand winner past him.