FIRST WORD

It was a big distraction, I’ll tell you that, because it was very big. That’s what I should have aimed for.” Roger Federer, joking about Jack Sock’s backside, after winning his opening match 6-4, 7-6 (7-4) Sunday in the season-ending ATP Finals in London. When Sock hit a shot that should have set up an easy winner for Federer, the American turned his back to Federer as if to protect himself from a shot to the body. Federer put his easy chance into the net.