Federer tops Murray, Del Potro wins at ATP finals

Roger Federer came alive once again after losing the first set, rallying to beat Andy Murray 3-6, 6-3, 6-1 Tuesday at the ATP World Tour Finals and ensuring he will have the year-end No. 1 ranking for the fifth time.

Federer dominated Murray in the final two sets, finally controlling play from his serve and also getting his forehand on target. Murray, meanwhile, started to struggle to win any points.

But for Federer, finishing the year as the top-ranked player was better than beating Murray.