Djokovic untroubled by Benneteau to continue U.S. Open title defense

 Serbia's Novak Djokovic cruised into the fourth round of the U.S. Open Sunday as he dispatched Frenchman Julien Benneteau in straight sets.

Djokovic won 6-3 6-2 6-2 in the first match on the Arthur Ashe Stadium court -- not facing a single break point in a 97-minute victory.

He put that down to improvements he has made with his service and the work appeared to have paid off.

"I wanted to get more free points on the first serve and today it was working well," Djokovic told the official tournament website.