Jo-Wilfried Tsonga of France returns a ball to Stanislas Wawrinka of Switzerland, during the first single match of the Davis Cup Final between France and Switzerland, at the Stadium Pierre Mauroy in Lille, France, 21 November 2014. EPA/SALVATORE DI NOLFI

Jo-Wilfried Tsonga of France serves the ball to Stanislas Wawrinka of Switzerland during their singles match on the first day of the Davis Cup World Group Final between France and Switzerland at the Pierre Mauroy Stadium in Lille, France, 21 November 2014. EPA/YOAN VALAT

Jo-Wilfried Tsonga (L) of France talks with French Davis Cup team coach Arnaud Clement (R) during his first day’s single match of the Davis Cup World Final against Stanislas Wawrinka of Switzerland at the Pierre Mauroy Stadium in Lille, France, 21 November 2014. EPA/YOAN VALAT

Jo-Wilfried Tsonga of France returns the ball to Stanislas Wawrinka of Switzerland during the first day’s single match of the Davis Cup World Final between France and Switzerland at the Pierre Mauroy Stadium in Lille, France, 21 November 2014. EPA/YOAN VALAT

Jo-Wilfried Tsonga of France reacts during the first single match of the Davis Cup Final between France and Switzerland at the Stadium Pierre Mauroy in Lille, France, 21 November 2014. EPA/SALVATORE DI NOLFI

Jo-Wilfried Tsonga of France returns the ball to Stanislas Wawrinka of Switzerland during the first day’s single match of the Davis Cup World Final between France and Switzerland at the Pierre Mauroy Stadium in Lille, France, 21 November 2014. EPA/YOAN VALAT

Jo-Wilfried Tsonga of France reacts during the first single match of the Davis Cup Final between France and Switzerland at the Stadium Pierre Mauroy in Lille, France, 21 November 2014. EPA/SALVATORE DI NOLFI