Roger Federer of Switzerland reacts during his single match against Richard Gasquet of France of the Davis Cup World Final between France and Switzerland at the Pierre Mauroy Stadium in Lille, France, 23 November 2014. EPA/YOAN VALAT

Roger Federer of Switzerland reacts after beating Richard Gasquet of France in their singles match of the Davis Cup World Final between France and Switzerland at the Pierre Mauroy Stadium in Lille, France, 23 November 2014. Switzerland won 3-1. EPA/YOAN VALAT

Swiss Davis Cup team players Roger Federer (R) and Stanislas Wawrinka (L) celebrate on the podium after defeating France in the Davis Cup World Final at the Pierre Mauroy Stadium in Lille, France, 23 November 2014. Switzerland won 3-1. EPA/YOAN VALAT

Swiss tennis team players celebrate with the trophy after defeating France during the Davis Cup World Final at the Pierre Mauroy Stadium in Lille, France, 23 November 2014. Switzerland won 3-1. EPA/YOAN VALAT

Swiss Davis Cup team players celebrate with the trophy after defeating France in the Davis Cup World Final at the Pierre Mauroy Stadium in Lille, France, 23 November 2014. Switzerland won 3-1. EPA/YOAN VALAT

Roger Federer of Switzerland celebrates after beating Richard Gasquet of France in their singles match of the Davis Cup World Final between France and Switzerland at the Pierre Mauroy Stadium in Lille, France, 23 November 2014. Switzerland won 3-1. EPA/YOAN VALAT