Yet, whereas Mr Sarkozy's poll Numbers have fallen to 36%, according to Ifop, a pollster, Mr Fillon's are basking at 55%-and have even climbed over the past year.

Yet, whereas Mr Sarkozy's poll numbers have fallen to 36%, according to Ifop, a pollster, Mr Fillon's are basking at 55%—and have even climbed over the past year.

Isner and Bob Bryan pulled one back for the U.S. by defeating Nenad Zimonjic and Janko Tipsarevic in Saturday's doubles.