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Roger Federer, of Switzerland, returns a shot to Juan Martin Del Potro, of Argentina, during a match at the BNP Paribas Open tennis tournament, Friday, March 16, 2012, in Indian Wells, Calif. (AP Photo/Darron Cummings)

Federer, Azarenka win titles in California

Roger Federer defeated John Isner 7-6 (7), 6-3 to win his record fourth BNP Paribas Open title Sunday, avenging a loss to the American who beat him in Davis Cup play last month.