Croatia’s Ivan Dodig returns a ball to Switzerland’s Marco Chiudinelli during their first round match at the Swiss Indoors tennis tournament at the St. Jakobshalle in Basel, Switzerland, 21 October 2014. EPA/GEORGIOS KEFALAS

Switzerland’s Stanislas Wawrinka in action against Kazakhstan’s Mikhail Kukushkin during their first round match at the Swiss Indoors tennis tournament at the St. Jakobshalle in Basel, Switzerland, 21 October 2014. EPA/GEORGIOS KEFALAS

Spain’s Rafael Nadal returns a ball to Italy’s Simone Bolelli during their first round match at the Swiss Indoors tennis tournament at the St. Jakobshalle in Basel, Switzerland, 20 October 2014. EPA/GEORGIOS KEFALAS

Canada’s Milos Raonic serves a ball to USA’s Steve Johnson during their first round match at the Swiss Indoors tennis tournament at the St. Jakobshalle in Basel, Switzerland, 21 October 2014. EPA/GEORGIOS KEFALAS

Spain’s Rafael Nadal serves a ball to Italy’s Simone Bolelli during their first round match at the Swiss Indoors tennis tournament at the St. Jakobshalle in Basel, Switzerland, 20 October 2014. EPA/GEORGIOS KEFALAS