David Ferrer of Spain returns the ball to Viktor Troicki of Serbia during their quarter final match of the Erste Bank Open ATP tennis tournament in Vienna, Austria, 28 October 2016. EPA/LISI NIESNER
Ivo Karlovic of Croatia in action against Karen Khachanov of Russia during their quarter final match of the Erste Bank Open ATP tennis tournament in Vienna, Austria, 28 October 2016. EPA/LISI NIESNER
Japan’s Kei Nishikori returns to Argentina’s Juan Martin Del Potro during their quarter final match at the Swiss Indoors tennis tournament at the St. Jakobshalle in Basel, Switzerland, 28 October 2016. EPA/ALEXANDRA WEY
USA’s Donald Young serves a ball to Switzerland’s Stan Wawrinka during their round of sixteen match at the Swiss Indoors tennis tournament at the St. Jakobshalle in Basel, Switzerland, 27 October 2016. EPA/GEORGIOS KEFALAS
Argentina’s Juan Martin Del Potro returns a ball to Belgium’s David Goffin during their round of sixteen match at the Swiss Indoors tennis tournament at the St. Jakobshalle in Basel, Switzerland, 27 October 2016. EPA/GEORGIOS KEFALAS
Topics: 10sballs.com, Atp World Tour, Basel, David Ferrer, Donald Young jr, Erste Bank Open, Ivo Karlovic, Juan Martin Del Potro, Karen Khachanov, Kei Nishikori, Photo Gallery, Swiss Indoors Basel, Tennis, Vienna