Gael Monfils

Roger Federer wins opening match at ATP Finals

One break of serve, and a mini-break, was all Roger Federer needed to win his opening match at the season-ending ATP Finals on Sunday.

The 19-time Grand Slam champion broke Jack Sock at the start of his 6-4, 7-6 (4) victory at the O2 Arena. Both then held serve the rest of the way, with Federer losing only three points on his serve in the second set.

"Sure, I had a tactical plan with my team," Federer said. "But very often in a first match like this, it gets thrown overboard because at the end you're just happy to be serving well. Focus on that first, and then on the return game sort of try your best, try to keep the ball in play, and go from...

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